Heat Shrink Tubing Wholesale & OEM Manufacturer in China
Looking for heat shrink tubing wholesale from a China factory? Difvan manufactures bulk single-wall, adhesive-lined and high-temperature heat shrink tubes for importers, distributors and OEM brands — 1.0 mm to 182 mm, VW-1 flame rated. We support custom printing, private-label packaging, mixed-size kits, flexible MOQs and export documentation, with quotations within 24 hours.
Bulk Heat Shrink Tubing — Choose Your Series
Heat shrink tubing is an expanded polymer sleeve that contracts tightly around wires, joints and terminals when heated above 70 °C. We produce two core series in our own factory — DF1 for insulation and identification, DF3 for waterproof sealing — plus a PVC economy range. Every series below ships with free samples, so you can prove the fit on your own cables before spending a dollar.
DF1 / HT1 Series
The workhorse. Halogen-free, flame-retardant polyolefin for everyday insulation, terminal protection and circuit identification across ~40 sizes.
- Rating 105 °C & 125 °C / 660 V
- Flame VW-1 · halogen-free
- Sizes 1.0 – 182 mm ID
- Colors 10 stock colors
DF3 / HT3 Series
The sealer. A hot-melt adhesive inner wall flows into every gap as it shrinks, locking out water and air — built for outdoor, automotive and marine joints.
- Range −55 °C to +125 °C
- Seal waterproof hot-melt lining
- Sizes 2.7 – 125 mm ID
- Adhesive melts 70–80 °C
PVC Heat Shrink Tubing
The saver. Shrinks at such low temperature that a soldering iron will recover it — the standard choice for battery wrapping and instrument panels on a budget.
- Shrinks at low temperature
- Best for batteries, panels
- Cost below polyolefin
- Flame retardant grades
Heat Shrink Size Calculator
Choosing the wrong diameter is the single most common ordering mistake in this product category — a sleeve that will not slide over the connector, or one that never grips the cable. Enter two measurements and we do the math for you.
Indicative starting point from catalog dimensions — confirm the final size with our engineers. We reply within 24 hours.
Single-Wall or Adhesive-Lined?
The rule is simpler than most suppliers make it sound: dry-location insulation and identification calls for single-wall; anything exposed to moisture, chemicals or corrosion calls for dual-wall adhesive-lined. Everything else is detail. Not sure what actually seals? Read is heat shrink tubing waterproof.
DF1 Single-Wall — pick when:
- Insulating splices, terminals and busbars indoors
- Color coding phase, neutral, earth and signal lines
- Bundling and abrasion protection with no sealing requirement
- Budget matters — the lowest cost per meter in our range
DF3 Adhesive-Lined — pick when:
- Outdoor, underground, automotive or marine joints
- Sealing cable branch-offs and repairing damaged jackets
- Rust protection on metal pipes and fittings
- The diameter steps down sharply — 3:1 recovery grips irregular shapes
Still unsure? Send the cable diameter, the environment and the quantity — we will recommend the exact series and size, free of charge.
2:1 vs 3:1 — Which Ratio Do You Need?
The shrink ratio tells you how much the diameter reduces on heating: 2:1 tubing shrinks to half its supplied diameter, 3:1 to one third. It is not a quality grade — it is a fit window. The bigger the step between the largest thing the sleeve slides over and the smallest thing it must grip, the higher the ratio you need.
| Ratio | Series | Shrinks to | Best for | Fit window example |
|---|---|---|---|---|
| 2:1 | DF1 | 50% of supplied ID | Uniform cables, insulation, color coding | Supplied 10 mm → grips 5.2–9 mm |
| 3:1 | DF3 | 33% of supplied ID | Connectors, step-downs, adhesive sealing | Supplied 12.7 mm → grips 4.4–12.5 mm |
A practical way to think about it: 2:1 is for cable-on-cable work where diameters barely change. 3:1 earns its premium the moment one sleeve must recover over a connector body and grip the thinner cable behind it. Because that situation almost always also involves weather exposure, 3:1 and adhesive lining usually travel together — which is exactly how our DF3 is built.
How to Size Heat Shrink Tubing — the 3-Step Method
To size heat shrink tubing, measure the widest point it must pass over, choose a supplied ID 20–30% larger, then confirm the recovered ID is smaller than the thinnest part it must grip. Here is each step in practice.
Measure the widest point
That is rarely the cable itself. On a splice it is the crimp barrel; on a terminal it is the connector body; on a repair it is the bulge of the damaged area. If you only have wire gauge, convert AWG to overall jacket diameter first — insulation adds more than most people expect.
Add a 20–30% slide-on allowance
Tubing that barely fits will snag, stretch thin at the edges, and slow the line down. The allowance also protects you against tolerance stack-up between the cable jacket and our supplied-ID tolerance. For automated or high-volume assembly, stay at the top of that allowance.
Check the recovered ID against the smallest grip point
The recovered ID in the size table must be comfortably below the thinnest diameter the sleeve lands on after shrinking. If it is not, the sleeve will sit loose, and a loose sleeve is a failed sleeve — it slides, it admits moisture, it fails inspection.
Common wire sizes, converted
| Wire (AWG) | Typical jacket Ø | Suggested DF1 (2:1) | Suggested DF3 (3:1, sealed) |
|---|---|---|---|
| 18–16 AWG | ~2.0–2.7 mm | DF1-4.0 (4.5 mm supplied) | DF3-6.4 (6.8 mm supplied) |
| 14–12 AWG | ~3.0–3.9 mm | DF1-6.0 (6.4 mm supplied) | DF3-6.4 / DF3-12.7 |
| 10–8 AWG | ~4.5–6.5 mm | DF1-10 (10.5 mm supplied) | DF3-12.7 (13.2 mm supplied) |
| 6–4 AWG | ~7.5–10 mm | DF1-20 (21 mm supplied) | DF3-12.7 / DF3-25.4 |
| 2–2/0 AWG | ~11–16 mm | DF1-20 / DF1-40 | DF3-25.4 (26.2 mm supplied) |
| 4/0 AWG & battery lugs | ~19–25 mm | DF1-40 (42 mm supplied) | DF3-25.4 / DF3-50 |
Jacket diameters vary by insulation type — treat this as a starting shortlist, then verify against the full size table below or send us the actual cable spec.
Three worked scenarios
- Splice on a 12 AWG machine-tool wire, indoors: crimp barrel ≈ 5 mm. DF1-6.0 slides over at 6.4 mm and recovers to 2.8 mm — tight on the 3.5 mm jacket either side. Single-wall does it; no seal needed.
- Battery lug on a 2 AWG marine cable: lug barrel ≈ 14 mm stepping down to a 12 mm jacket, in a wet locker. DF3-25.4 passes over the lug at 26.2 mm and recovers to 8.5 mm with adhesive flooding the step — sealed and strain-relieved in one piece.
- Busbar insulation at 60 mm width: flat bars measure by perimeter, not width — a 60 × 6 mm bar needs ~42 mm equivalent diameter. DF1-80 at 81 mm supplied recovers to 37 mm and hugs the bar. This is why our range runs to 182 mm when most suppliers stop near 100.
Size Table — Straight From Our Catalog
Selected sizes below; we produce around 40 DF1 sizes and 18 DF3 sizes in total. Ask for the full catalog PDF with every dimension and tolerance, or send your cable list and we will match sizes for you. For every size in mm, inch and AWG, see the full heat shrink tubing size chart.
DF1 Single-Wall (2:1)
| Item No. | Supplied ID (mm) | Recovered ID (mm) | Application Range (mm) | Packing (m/roll) |
|---|---|---|---|---|
| DF1-1.0 | 1.4 ±0.3 | 0.4 ±0.1 | 0.75–0.9 | 200 |
| DF1-2.0 | 2.4 ±0.3 | 0.9 ±0.1 | 1.1–1.8 | 200 |
| DF1-4.0 | 4.5 ±0.4 | 1.8 ±0.1 | 2.1–3.6 | 200 |
| DF1-6.0 | 6.4 ±0.4 | 2.8 ±0.2 | 3.1–5.4 | 100 |
| DF1-10 | 10.5 ±0.5 | 4.8 ±0.2 | 5.2–9.0 | 100 |
| DF1-20 | 21.0 ±0.8 | 9.7 ±0.3 | 10.4–19 | 100 |
| DF1-40 | 42.0 ±1.0 | 19.0 ±0.1 | 21–39 | 50 |
| DF1-80 | 81.0 ±1.0 | 37.0 ±2.0 | 45–75 | 25 |
| DF1-120 | 122.0 ±2.0 | 58.0 ±2.0 | 65–115 | 15 |
| DF1-180 | 182.0 ±2.0 | 88.0 ±2.0 | 95–175 | 15 |
DF3 Dual-Wall Adhesive-Lined (3:1)
| Item No. | Supplied ID (mm) | Recovered ID (mm) | Application Range (mm) |
|---|---|---|---|
| DF3-2.4 | 2.7 ±0.3 | 0.80 | 0.9–2.2 |
| DF3-6.4 | 6.8 ±0.4 | 2.20 | 2.4–6.4 |
| DF3-12.7 | 13.2 ±0.5 | 4.20 | 4.4–12.5 |
| DF3-25.4 | 26.2 ±0.8 | 8.50 | 8.8–25 |
| DF3-50 | 50.0 ±0.8 | 17.0 | 17.5–49 |
| DF3-125 | ≥125 | 42.0 | 44–125 |
Dimensions are indicative catalog values — confirm tolerances for your application before ordering.
Four Materials, One Honest Recommendation
Material choice depends on the environment the sleeve lives in, not on the catalog page it appears on. Cross-linked polyolefin is the all-round standard; PVC saves cost; elastomeric handles movement and fluids; FEP survives chemical and temperature extremes. We will tell you when the cheaper grade is genuinely good enough — and when it is not. For the full breakdown, read our heat shrink tubing materials guide.
Cross-linked polyolefin — the default, for a reason
Polyolefin balances flexibility, tensile strength and heat resistance better than any other commodity heat shrink material. It shrinks smoothly and predictably, takes flame-retardant and halogen-free formulations well, and holds its properties across the full −45 °C to 125 °C band that covers most electrical work. If you are not sure what to specify, start here.
PVC — the economical thermoplastic
PVC shrinks at a distinctly lower temperature — low enough that a soldering iron passed nearby will recover it, which is why battery pack assemblers love it. It is flame retardant, insulates well, and costs less than polyolefin. Its trade-off is a lower maximum service temperature, so keep it away from engine bays and hot enclosures.
Elastomeric — for movement, vibration and fuels
Elastomeric tubing stays rubber-flexible even at low temperatures and shrugs off the diesel, petrol and hydraulic fluids that attack standard grades. Specify it for harnesses on vehicles and mobile equipment, where the loom flexes with every mile and a stiff sleeve would crack at the clamp points.
FEP — for the environments that destroy everything else
FEP is the fluoropolymer answer to extreme heat, UV, cold, moisture and aggressive chemicals. It costs more and comes in specialist sizes, but where a plating line, an outdoor installation in punishing sun, or a chemical dosing skid keeps eating standard sleeves, FEP stops the repeat failures.
High-Temperature Heat Shrink Tubing Options
If your application runs hotter than the standard 125 °C polyolefin band, we supply high-temperature options from the same production lines: elastomeric grades for hot, vibrating engine-bay looms and FEP fluoropolymer tubing for the most extreme heat, UV and chemical exposure. As a high temp heat shrink tube supplier we match the material to your temperature profile — tell us the continuous and peak temperatures and we quote the right grade, not the dearest one.
| Material | Key strengths | Watch out for | Typical use |
|---|---|---|---|
| Cross-linked polyolefin | Balanced flexibility, strength, heat resistance; halogen-free FR grades | Standard grades not for extreme chemicals | General insulation, harnesses, terminals |
| PVC | Low shrink temperature; flame retardant; lowest cost | Lower max service temperature | Instrument panels, battery wrapping |
| Elastomeric | Flexible at low temp; resists diesel, petrol, vibration | Higher cost; fewer colors | Automotive & mobile equipment |
| FEP | Extreme heat, UV, cold, chemical and moisture resistance | Premium price; specialist sizes | Harsh chemical & outdoor environments |
Ten Stock Colors for Instant Circuit ID
Color is not decoration in a panel — it is documentation you can read at arm's length. Coding phase, neutral, earth and signal lines by sleeve color cuts fault-finding time and keeps inspections short. Yellow-green earth striping is available on request.
| Color | Common coding use |
|---|---|
| Black | General insulation; standard for dual-wall and outdoor work |
| Red / Blue | Positive / negative DC conductors, battery polarity |
| Yellow-green (on request) | Earth / ground identification to wiring codes |
| White / Grey | Neutral marking; print-friendly base for custom marking |
| Orange / Purple / Brown / Green | Phase and circuit ID in multi-line panels |
Need every roll in one color, or mixed-color kits for retail shelves? Both are standard OEM options — see bulk & OEM.
What Is Heat Shrink Tubing & How Does It Work?
Heat shrink tubing is a polymer sleeve that is extruded, cross-linked by irradiation, then mechanically expanded. Heating it above about 70 °C releases the stored shape, and the sleeve recovers tightly around whatever it covers.
Insulation + strain relief + abrasion protection (+ adhesive seal in DF3)
The shape-memory principle
Cross-linking bonds the polymer chains into a network that remembers its extruded diameter. Expansion stretches that network and freezes it in place; heat lets the chains relax back. That is why recovery is permanent, even and seamless — not loose and layered like tape.
Why it outlasts electrical tape
Tape relies on adhesive that softens with heat and unwinds with vibration. A recovered sleeve is one continuous layer: it cannot unwind, and quality polyolefin typically serves for years in conditions where tape needs replacing within months.
One sleeve, four jobs
A single piece of tubing insulates the conductor, relieves strain at the termination, protects against abrasion, and — in adhesive-lined form — seals out moisture. That consolidation is why harness makers specify tubing rather than layered tape.
Storage & shelf life
Store rolls cool, dry and out of direct sunlight, away from heaters and hot roof spaces — the same heat that installs the product will slowly pre-shrink it in bad storage. Kept properly, tubing remains usable for years; if a roll has visibly necked down or lost flexibility, scrap it rather than fight it on the line.
Installation: 6 Steps to a Perfect Shrink
Shrinking starts at about 70 °C, with full recovery at 125 °C. A hot-air gun gives the most even result; an oven suits batch production. A hair dryer on maximum can recover thin single-wall sleeves in a pinch, but it lacks the heat for large diameters and adhesive-lined grades. Full walkthrough: how to use heat shrink tubing.
Measure & cut
Cut 5–10 mm longer than the joint so the sleeve overlaps sound insulation on both sides.
Prepare surfaces
Clean and dry the cable. Grease or dust stops adhesive-lined tubing from bonding.
Position the sleeve
Slide the tubing on before crimping or soldering — then center it over the joint.
Heat evenly
Start from the middle and work outward, rotating the joint so no air is trapped.
Watch the cues
The tube turns glossy and hugs every contour. On DF3, an adhesive bead at each end confirms the seal.
Cool & inspect
Let it cool undisturbed. Check for splits, thin spots or lifted edges before energizing.
The four mistakes that cause almost every failure
- Scorching one spot — holding the gun still until the sleeve browns. Keep it moving; heat is a bath, not a torch.
- Recovered ID too large — the sleeve shrinks fully and still spins on the cable. Size against the smallest grip point, not the connector.
- Dirty surfaces under adhesive grades — the glue bonds to the grease, not the jacket, and the seal fails its first winter.
- Forgetting the sleeve — terminating the joint first, then discovering the tubing cannot pass the connector. Every technician does it exactly once.
Applications & Industries
The same sleeve does very different jobs in different industries. These are the six we ship the most volume into — and what buyers in each one specify.
Electrical & Panel Building
Splices, busbars and terminals in switchgear and control cabinets. Panel shops standardize on halogen-free DF1 for public-building compliance and buy mixed-size packages to cover a whole build from one order.
Automotive & EV
Harness branch protection where looms flex and fluids splash. Elastomeric grades resist diesel and petrol; dual-wall DF3 seals junctions against road spray. EV pack builders add PVC for cell wrapping.
Marine
Below-deck and mast wiring live in permanent salt fog. Adhesive-lined DF3 is the only correct answer here — the melted glue blocks capillary water travel along the strands, the failure mode that kills boat circuits.
Electronics
Component insulation, solder joint protection and strain relief on leads. Thin-wall DF1 in small diameters, often clear or color-coded by signal type, cut to length in-house or supplied pre-cut by us.
Battery Packs
PVC wrapping and terminal insulation from single 18650 cells to industrial packs. Low shrink temperature matters here — cells must never see the heat a polyolefin sleeve would demand.
Utilities & Field Repair
Cable jacket repair, joint remediation and rust protection on metal pipework. Large-diameter DF3 recovers over damaged sections and seals them permanently — cheaper than replacement, faster than wrapping.
Compliance & Testing — What the Ratings Actually Mean
Certificates only matter if you know what they test. Here is what each rating on our datasheets verifies, in plain language your compliance team can file and your customers can audit.
VW-1 flame test
A vertical sample is flamed five times and must self-extinguish quickly without dripping flaming material onto the cotton below. Our DF1 series passes — the rating that matters wherever fire codes apply.
Temperature & voltage ratings
Our datasheets specify 105 °C/660 V and 125 °C/660 V continuous service classes — temperature and voltage limits you can design against, with supporting test documentation supplied alongside your quotation.
Halogen-free
No chlorine or bromine compounds, so a fire produces no corrosive, toxic halogen gases. Specified in rail, public buildings and data centers — and increasingly in general tenders.
Batch quality control
Every production run is checked for supplied and recovered dimensions, wall thickness, shrink ratio and full recovery before shipment. A bad batch never leaves the factory to become your warranty claim.
View our certificates: difvan.com/certificate — or ask us to attach the PDFs to your quotation so your compliance team can file them on day one.
Bulk Heat Shrink Tubing Wholesale From Our China Factory
Buying heat shrink tubing wholesale direct from the factory removes distributor margins and gives you control of the specification. Since 1997 our heat shrink tube factory has supplied importers, wholesalers and OEM brands in more than fifty countries — single-wall bulk reels, adhesive heat shrink tube wholesale lots and mixed-size kits — many of them for over a decade, which in this trade is the only reference that matters.
What drives your price per meter?
Four factors: material (PVC < polyolefin < elastomeric < FEP), wall type (dual-wall adhesive costs more than single-wall), diameter (larger ID uses more material), and order volume. Tell us your annual usage and we quote tiered pricing so you can see exactly where the breaks are — no games, no "call for pricing" wall.
Send an RFQ we can answer fast
Include five things: sizes or cable diameters · single-wall or adhesive-lined · colors · quantity per size · destination port. That is everything we need to price the order and confirm lead time in a single reply, with certificates attached if you ask.
Custom-Printed Heat Shrink Tube OEM & Private Label
Need a custom printed heat shrink tube with your logo or part numbers? As a heat shrink tube OEM in China we print, colour-match, cut to length and pack under your brand — bulk reels, retail packs or mixed-size kits, ready for your distribution channel.
Heat Shrink Tube Export Services
Difvan is a heat shrink tube exporter with customers in more than fifty countries. We handle export packing, commercial documentation and container consolidation — tubing shipped together with wire connectors and cable ties in one load, quoted to your destination port.
MOQ, Lead Time and Price List Requests
Ask for our heat shrink tube price list: tiered pricing by size, wall type and volume, so you see every quantity break before you commit. MOQ is flexible from trial orders to container loads, and lead time is confirmed line by line with every quotation.
Request a Quote NowWhy Importers Choose Difvan as Their Heat Shrink Tube Factory
- Manufacturer since 1997 — you buy from the factory floor, not a trading company's markup.
- VW-1 flame rated, halogen-free — 105 °C/660 V and 125 °C/660 V service classes, with test documentation supplied on request.
- Full range in one shipment — tubing plus wire connectors, solder connectors and cable ties, consolidated in one container.
- 1.0–182 mm and ten colors from stock — including the large diameters most suppliers do not carry.
- Free samples and flexible MOQ — prove the quality before the purchase order.
- Exports to 50+ countries with export packing, reliable lead times and documentation done right.
Frequently Asked Questions
What is heat shrink tubing?
Heat shrink tubing is an expanded plastic sleeve that contracts when heated above about 70 °C, forming a tight insulating layer around wires, joints and terminals. It is made from cross-linked polyolefin, PVC, elastomeric or FEP.
Is heat shrink tubing waterproof?
Single-wall resists moisture but does not seal. Dual-wall adhesive-lined tubing such as our DF3 series is waterproof: the inner adhesive melts at 70–80 °C and fills every gap for a water- and air-tight seal.
What temperature does heat shrink tubing need?
Our tubing starts shrinking at about 70 °C and recovers fully at 125 °C. A hot-air gun is the recommended tool; an oven works for batch production.
Can I shrink it with a hair dryer or lighter?
A hair dryer on maximum can recover thin single-wall sleeves, though slowly. A lighter works in emergencies but risks scorching and uneven shrink — and neither reaches the stable heat that adhesive-lined tubing needs for a reliable seal. For production work, use a hot-air gun.
What is the difference between 2:1 and 3:1 shrink ratio?
2:1 shrinks to half its supplied diameter; 3:1 to one third. Use 2:1 for uniform cables and 3:1 where the tubing must recover over connectors or diameter steps.
Which sizes do you supply?
Single-wall DF1 runs from 1.0 mm to 182 mm supplied ID across ~40 sizes. Dual-wall DF3 runs from 2.7 mm to 125 mm.
What colors are available?
Ten stock colors in single-wall: black, white, red, blue, yellow, green, brown, grey, orange and purple. Dual-wall is black standard, others on request.
How long does heat shrink tubing last?
Installed correctly within its temperature rating, quality polyolefin tubing serves for many years — it does not unwind or dry out the way taped joints do. Shelf life in storage is also measured in years when rolls are kept cool, dry and out of sunlight.
Do you offer custom printing or private label?
Yes. Custom colors, cut lengths, printed marking and your own retail packaging are standard OEM services — many of our distributor customers sell our tubing under their own brands.
What is your MOQ and do you provide samples?
Our MOQ is flexible — from trial orders to container volumes — and free samples are available so you can test before ordering.
Which certifications and ratings do your products carry?
Our single-wall series is VW-1 flame rated with 105 °C/660 V and 125 °C/660 V service ratings, and our materials are halogen-free. Test reports and compliance documents are supplied with quotations on request — company-level certifications are on our certificate page.
How fast can I get a quote?
Send sizes, colors and quantities and we reply with a detailed quotation within 24 hours — with tiered pricing if you share your annual volume.
Do you sell heat shrink tubing wholesale to distributors?
Yes — wholesale and bulk supply is our core business. Importers and distributors buy full reels and container lots factory-direct, with tiered pricing from our heat shrink tube price list, and OEM printing or private-label packaging when needed.
The Terms on Our Datasheets, Decoded
Get Factory-Direct Pricing Today
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Get a Quote & Free SamplesRelated: PVC Heat Shrink · Wire Connectors · Solder Connectors · Cable Ties
The Difvan range
Heat Shrink Tubing by Type — Go Straight to the Product Page
Every tubing line we manufacture, with the accessories that install it. Pick the one that matches your job and the full specification, size range and bulk pricing are on that page.
Polyolefin Heat Shrink Tubing
The 2:1 all-rounder for general wire insulation, terminals and splices — halogen-free, VW-1 flame rated, 1.0–182 mm.
View polyolefin range →Adhesive-Lined Dual-Wall Heat Shrink Tubing
3:1 DF3 with a hot-melt inner wall that melts and seals the joint watertight — the grade for outdoor, underground and marine wiring.
View dual-wall range →PVC Heat Shrink Tubing
Shrinks at a lower temperature and costs the least — the economy choice for battery wrapping, panels and see-through labelling.
View PVC range →High Voltage Heat Shrink Tubing
Insulation tube for copper bar and busbar in electrical equipment, available in 10 kV, 20 kV and 35 kV grades.
View high-voltage range →Colored Heat Shrink Tubing
Black, red, yellow, green, blue, white and transparent across the full size range — for phase, neutral, earth and signal identification.
View colour range →Clear Heat Shrink Tubing
Transparent sleeving with a 3:1 retraction ratio, so labels and joints stay readable after the tube has recovered.
View clear range →Green/Yellow Heat Shrink Tubing
Yellow-green striped tubing used as an earth wire cable marker, for compliant identification of the protective conductor.
View green/yellow range →Heat Shrink Tubing Kits
Both 2:1 and 3:1 ratios in one box. As a heat shrink tube kit supplier, Difvan produces custom assortment boxes for distributors, retailers and maintenance teams, with configurable sizes, colors, lengths and private-label packaging.
View assortment kits →Heat Gun
1600 W dual-temperature hot-air gun with four nozzles — controlled heat is what makes the difference between a sealed joint and a scorched one.
View heat guns →Specifying it? Start with these guides
- Heat shrink tubing size chart — mm, inch and AWG
- Heat shrink tubing materials — polyolefin vs PVC vs FEP
- How to use heat shrink tubing — the 6-step method
- Is heat shrink tubing waterproof? — what actually seals
- Single wall vs dual wall — which construction to use
- Marine heat shrink tubing — boat wiring and saltwater
- Heat shrink tubing kit guide — choosing an assortment
- Heat guns for heat shrink tubing — which tool and setting
- How to choose a supplier — the specs to lock first