Conduit Cable Gland Supplier — Barrier, Compression & Flexible Conduit
Conduit Cable Gland — Factory-Direct Supply, CE & RoHS Certified
When your installation uses conduit — steel, PVC, flexible, or corrugated — the point where that conduit enters an enclosure matters. A standard cable gland grips the cable. A conduit cable gland grips the conduit. That distinction drives IP rating, mechanical integrity, and compliance. Getting it wrong costs you both.
At Difvan, we manufacture and supply a complete range of conduit cable glands — barrier type, compression type, and flexible conduit variants — in brass, stainless steel, and nylon. Whether your system uses 20mm steel conduit in an industrial panel, PVC conduit on a commercial build, or flexible metallic conduit on a machine, we have the right fitting.
We supply directly to panel builders, electrical contractors, distributors, and project procurement teams worldwide. If you need certified, consistently manufactured conduit cable glands in volume — with documentation and reliable lead times — you are in the right place.
Is This Page for You?
If any of the following applies to your project or business, read on:
- A panel builder sourcing conduit cable glands for steel or PVC conduit entries into industrial enclosures
- An electrical contractor specifying conduit fittings that achieve IP65 at the enclosure entry — not just at the conduit run
- A procurement manager consolidating supply of barrier and compression conduit glands across a project bill of materials
- A distributor building stock of standard conduit gland sizes for the construction, industrial, or commercial electrical market
- A design engineer specifying the correct conduit-to-enclosure transition for a 20mm or metric conduit system
If your requirement is for cable glands on unprotected cables — without any conduit system — our standard cable gland range is the right starting point. This page covers conduit-specific fittings only.
Our Conduit Cable Gland Range
Our conduit cable gland range covers every major conduit type used in industrial, commercial, and infrastructure installations worldwide. Every product is available in multiple materials and thread standards — metric, NPT, and PG — and supplied with CE marking and RoHS compliance documentation as standard.
Type | Conduit Compatibility | Thread Entry | Material | IP Rating | Size Range |
|---|---|---|---|---|---|
Barrier Conduit Gland | Steel conduit, rigid conduit, metal conduit | Metric / NPT / PG | Brass / SS-316 | IP65 | M16 – M63 / 1/2″–2″ NPT |
Compression Conduit Gland | PVC conduit, plastic conduit, rigid conduit | Metric / PG | Brass / Nylon | IP65 | M16 – M50 / PG 9 – PG 29 |
Flexible Conduit Gland | Flexible metallic conduit (FMC), PVC flex conduit | Metric / PG | Brass / Nylon | IP54–IP65 | 15mm – 32mm ID |
PVC Conduit Gland | PVC rigid and corrugated conduit | Metric | Brass / Nylon | IP65 | 16mm – 50mm conduit OD |
20mm Conduit Gland | 20mm steel or PVC conduit, standard knockout | Metric M20 | Brass / Nylon / SS | IP65 | 20mm conduit OD |
Conduit Hub (Locknut Type) | Steel conduit, EMT, IMC conduit | NPT thread | Zinc / Brass | IP54 | 1/2″–2″ NPT |
Brass Gland for Plastic Conduit | PVC, nylon, corrugated plastic conduit | Metric / PG | Nickel Plated Brass | IP65 | M16 – M40 |
All conduit cable glands are available in standard metric, NPT, and PG thread entries. Custom conduit OD fits, extended thread lengths, and special finishes are available for bulk and OEM orders. Contact us with your conduit specification and we will confirm the correct gland type and size.
Barrier vs Compression — Which Conduit Cable Gland Do You Need?
The most common specification question we receive is this: barrier type or compression type? The answer depends on your conduit material, thread availability, and IP requirement. Here is the full comparison:
Feature | Barrier Conduit Gland | Compression Conduit Gland |
|---|---|---|
Primary Function | Seals conduit entry to enclosure — provides mechanical stop and IP seal at the conduit-to-enclosure joint | Compresses around conduit OD to grip and seal — suited for thin-wall and plastic conduit types |
Conduit Type | Steel conduit, rigid metal conduit (RMC), EMT (with bushing), armoured conduit | PVC conduit, flexible plastic conduit, corrugated conduit, light steel conduit |
Thread Connection | Threaded directly into enclosure knockout — same thread as conduit (metric, NPT, or PG) | Slides over conduit OD — compression nut grips and seals the conduit wall |
Seal Method | Rubber seal inside gland body seats against the conduit end — forms watertight joint at entry point | Compression cone and clamping ring deform slightly around conduit OD — no thread required |
IP Rating Achieved | IP65 standard; IP68 with double seal variant | IP54 to IP65 depending on conduit fit and seal quality |
Material Options | Brass (standard), SS-316 (corrosive environments) | Brass for metal enclosures, Nylon/PA66 for plastic enclosures, SS-316 on request |
Best Applications | Industrial panels, external conduit runs, metal enclosure entries, outdoor cable routes | Domestic and commercial panels, PVC conduit systems, lightweight cable management |
Difvan Supply | Yes — full metric, NPT, PG range in brass and SS-316 | Yes — metric and PG range in brass and nylon, bulk available |
If you are specifying for a steel conduit system in an industrial facility, barrier conduit glands are almost always the correct choice. For PVC conduit on commercial or infrastructure projects, compression types are the standard. For flexible conduit — see the flexible conduit section below. If you are still unsure, send us your conduit type and enclosure spec and we will advise.
Conduit Type Compatibility Guide
Not all conduit cable glands fit all conduit types. Use this table as your compatibility reference — matching your conduit material and construction to the correct gland entry method and recommended product.
Conduit Type | Material | Entry Method | Recommended Gland | IP Achievable | Difvan Stock |
|---|---|---|---|---|---|
Steel Rigid Conduit (RMC) | Galv. Steel | Threaded (NPT/Metric) | Barrier conduit gland — brass or SS-316 | IP65 | Yes |
EMT (Thin-Wall) | Steel | Compression or locknut | Conduit hub locknut type — NPT or metric | IP54 | Yes |
IMC (Intermediate) | Steel | Threaded (NPT) | Barrier conduit gland — NPT thread | IP65 | Yes |
PVC Rigid Conduit | PVC Plastic | Compression or glued | Compression conduit gland — brass or nylon | IP65 | Yes |
Corrugated PVC Conduit | Flexible PVC | Compression — over OD | Flexible conduit gland — over corrugated OD | IP54 | Yes |
Flexible Metallic (FMC) | Steel/Aluminium | Connector + locknut | Flexible conduit gland — FMC compatible | IP54 | Yes |
Liquid-Tight Flex (LFMC) | PVC coated FMC | Compression connector | Liquid-tight flexible conduit gland | IP65 | Yes |
20mm Steel Conduit | Steel | M20 threaded knockout | 20mm barrier conduit gland — brass or nylon M20 | IP65 | Yes |
Note on 20mm conduit: The 20mm conduit entry (M20 thread) is by far the most common conduit gland size we supply. It covers standard 20mm steel conduit, 20mm PVC conduit, and the standard 20mm knockout used in the majority of European and Asian industrial enclosures. We hold this size in continuous production stock in both brass and nylon.
Cable Glands for Flexible Conduit — FMC, LFMC & PVC Flex
Flexible conduit presents a specific challenge at the enclosure entry point: you cannot use a threaded barrier gland on a conduit that has no thread. Our flexible conduit cable glands are designed specifically for this application.
Flexible Metallic Conduit (FMC) Glands
FMC is widely used for the final connection to motors, drives, and vibrating equipment — where rigidity is not practical. Our FMC conduit cable glands use an over-OD design: the gland body accepts the conduit end, and a compression nut and sealing cone grip the exterior of the conduit. Available in brass and SS-316, with IP54 to IP65 sealing depending on the conduit OD fit.
Liquid-Tight Flexible Conduit (LFMC) Glands
Liquid-tight flexible conduit — also known as Sealtite or LFMC — has a PVC jacket over the metallic core. Our LFMC cable glands compress around the smooth PVC outer jacket, providing a watertight seal at the conduit entry. Particularly specified for outdoor equipment connections, washdown environments, and anywhere the conduit run is exposed to moisture.
Corrugated PVC Flexible Conduit Glands
Corrugated plastic conduit (sometimes called split conduit or corrugated loom) is commonly used in cable management for machinery and instrumentation. Our cable glands for flexible PVC conduit grip the corrugated exterior profile directly — providing mechanical retention and a basic IP seal at the enclosure entry point.
For all flexible conduit applications, please specify your conduit type and outer diameter when enquiring. Flexible conduit ODs vary between manufacturers even for nominally the same size — we will confirm the correct gland variant for your specific conduit.
Conduit Cable Gland Size Chart — Metric, NPT & PG Thread
The size chart below covers our standard conduit cable gland range across all thread standards. The 20mm conduit cable gland (M20) and 1/2″ NPT are our highest-volume sizes — both held in continuous production stock. All other sizes are available on standard lead time.
Thread Size | Conduit OD Range (mm) | Gland Type | Material | IP Rating | Common Application |
|---|---|---|---|---|---|
M16 | 12 – 15 | Barrier / Comp. | Brass / Nylon | IP65 | Light conduit, 16mm PVC, instrument cable |
M20 | 16 – 19 | Barrier / Comp. | Brass / Nylon | IP65 | 20mm steel & PVC conduit — most common knockout |
M25 | 20 – 24 | Barrier / Comp. | Brass / SS-316 | IP65 | 25mm rigid steel conduit, medium cable routes |
M32 | 27 – 31 | Barrier | Brass / SS-316 | IP65 | 32mm steel conduit, multi-core industrial cables |
M40 | 35 – 39 | Barrier | Brass / SS-316 | IP65 | 40mm conduit, larger cable bundles |
M50 | 44 – 48 | Barrier | Brass / SS-316 | IP65 | 50mm heavy steel conduit, power cables |
M63 | 56 – 60 | Barrier | SS-316 | IP65 | Large conduit entries, industrial power distribution |
1/2″ NPT | 21.3 OD | Barrier (Hub) | Brass / SS-316 | IP65 | North American 1/2″ steel conduit — standard knockout |
3/4″ NPT | 26.7 OD | Barrier (Hub) | Brass / SS-316 | IP65 | North American 3/4″ conduit |
1″ NPT | 33.4 OD | Barrier (Hub) | Brass / SS-316 | IP65 | North American 1″ rigid conduit |
PG 11 | 16 – 18 | Compression | Brass / Nylon | IP65 | Light PVC conduit, 20mm PVC — European spec |
PG 16 | 21 – 24 | Compression | Brass / Nylon | IP65 | 25mm PVC conduit, standard European knockout |
PG 21 | 27 – 30 | Compression | Brass / Nylon | IP65 | 32mm PVC conduit, European industrial |
PG 29 | 35 – 38 | Compression | Brass / SS-316 | IP65 | 40mm conduit — European industrial panels |
Custom sizes, extended thread depths, and alternative conduit OD fits are available for project-specific and OEM orders. Please contact us with your conduit OD and enclosure wall thickness for a custom recommendation.
Conduit Hub vs Cable Gland — Understanding the Difference
This is one of the most searched questions in conduit cable management — and one of the most important to get right for IP compliance. Here is the full comparison:
Feature | Conduit Hub | Conduit Cable Gland |
|---|---|---|
Primary Purpose | Terminates conduit into enclosure wall — mechanical connection only | Terminates conduit AND seals cable jacket — mechanical + IP protection |
Seals the Cable? | No — conduit hub does not grip or seal the cable inside the conduit | Yes — internal seal grips cable jacket directly for full IP rating |
IP Rating | IP54 in most cases — depends on conduit system seal integrity | IP65 standard, IP68 with double compression seal variant |
Use With | Used where conduit system provides the ingress protection (sealed conduit runs) | Used where cable entry point must independently achieve IP rating |
Thread Standard | Primarily NPT (US standard) — also available in metric | Metric, NPT, and PG thread — full range |
Typical Region | North America — NEC conduit wiring method | Global — IEC, NEC, and mixed-standard installations |
Difvan Supply | Yes — locknut conduit hub type in NPT and metric | Yes — full barrier and compression conduit gland range |
Bottom line: if your installation requires a specific IP rating at the enclosure entry point — which most IP65-rated panels and outdoor enclosures do — a conduit cable gland is the correct specification. A conduit hub or plain conduit fitting will not independently achieve this. This is a common specification oversight that leads to failed IP testing and site rework.
Material Options — Brass, Stainless Steel & Nylon
Choosing the right material for your conduit cable gland ensures long-term performance and compliance with your enclosure’s material and environmental requirements.
Material | Key Properties | Best For |
|---|---|---|
Brass (Nickel Plated) | High mechanical strength, good corrosion resistance, compatible with steel and PVC conduit, RoHS compliant | Standard industrial panels, steel conduit, PVC conduit, commercial installations |
SS-316 Stainless Steel | Superior corrosion resistance, chloride-resistant (2% Mo), food-grade surface finish option | Outdoor conduit entries, coastal / offshore, food processing, chemical environments |
Nylon (PA66) | Lightweight, non-conductive, chemical-resistant, no galvanic corrosion with plastic conduit | PVC conduit systems, plastic enclosures, light commercial, instrumentation panels |
Brass cable gland for plastic conduit: Brass compression conduit glands are the most widely used fitting for PVC conduit entries into steel enclosures. The brass body provides mechanical durability at the enclosure wall while the compression seal accommodates the plastic conduit OD. If you are connecting PVC conduit to a plastic enclosure, a nylon conduit gland is preferred to avoid the galvanic compatibility issue between brass and certain plastic enclosure materials.
Industries & Applications — Where Conduit Cable Glands Are Specified
Conduit cable glands appear across virtually every industrial and commercial electrical installation. Here are the primary sectors and applications we supply into:
Industrial Panel Building
The single largest application for conduit cable glands. Panel builders use barrier and compression conduit glands to terminate steel and PVC conduit runs at enclosure entries. The M20 and M25 metric sizes are the standard for most European and Asian industrial panels.
Infrastructure & Civil Projects
Water treatment plants, pumping stations, substations, and infrastructure facilities use conduit wiring systems throughout. Conduit cable glands are the standard entry fitting wherever conduit meets a waterproof or dust-proof enclosure on these projects.
Commercial Construction — MEP Fit-Out
Mechanical, electrical, and plumbing (MEP) contractors on commercial builds specify conduit cable glands for electrical distribution boards, DB panels, and service enclosures. Compression conduit glands in nylon and brass for PVC conduit are the standard fitting in these environments.
Machine Building & OEM Equipment
Machine builders use flexible conduit — FMC and LFMC — to route cables to motors, actuators, and drives. Our flexible conduit cable glands are the correct termination fitting at the machine enclosure entry, providing both mechanical strain relief and IP sealing.
Utilities & Power Distribution
Transformer kiosks, cable pillars, ring main units, and secondary distribution equipment all use conduit cable gland entries. We supply panel builders and utilities equipment manufacturers with conduit glands for both cable and conduit entries on a project-by-project and framework basis.
Marine & Offshore — Conduit Systems
Offshore platforms and vessels that use conduit wiring systems specify SS-316 conduit cable glands for all topside and marine-environment conduit entries. Our SS-316 barrier conduit glands with IP65 sealing are the standard specification for these environments.
How to Specify the Right Conduit Cable Gland — Checklist
Before submitting an enquiry, confirm these parameters. The more detail you provide, the faster and more accurate our recommendation will be:
- Conduit type — steel rigid, EMT, PVC rigid, PVC corrugated, FMC, LFMC
- Conduit outer diameter (OD) — in mm or inches — not nominal size
- Thread standard — metric (M-thread), NPT (American), or PG (European)
- Thread size required — M20, M25, 1/2″ NPT, PG 16, etc.
- Gland type — barrier (threaded conduit end) or compression (over conduit OD)
- Enclosure wall thickness — relevant for thread engagement length
- IP rating required — IP54, IP65, or IP68
- Environment — indoor, outdoor, wet area, coastal/marine, washdown
- Material preference — brass, SS-316, nylon, or as specified
- Certifications required — CE, RoHS, specific project documentation
- Quantity required — for pricing, lead time, and stocking confirmation
Send us this information and we will respond with a specific product recommendation, datasheet, and project pricing within 24 hours.
Frequently Asked Questions — Conduit Cable Glands
Q1: What is a conduit cable gland and how is it different from a standard cable gland?
Q2: What is the difference between a barrier conduit cable gland and a compression conduit cable gland?
Q3: Can I use a cable gland instead of a conduit fitting to terminate a conduit run?
In most cases, yes — a barrier conduit cable gland can replace a traditional conduit fitting at an enclosure entry, and in doing so it adds IP sealing at the cable entry point that a standard conduit fitting does not provide. The distinction is important: a conduit fitting (like an EMT connector) mechanically terminates the conduit but does not independently seal the cable inside. A conduit cable gland does both. If your installation requires an IP65-rated cable entry, a conduit cable gland is the correct component rather than a plain conduit fitting or hub.
Q4: What is a conduit hub and how does it differ from a conduit cable gland?
A conduit hub (also called a Myers hub or insulated throat hub in North American terminology) is primarily a mechanical fitting that connects a rigid conduit to an enclosure wall. It provides a threaded, weatherproof mechanical joint — but it does not grip or independently seal the cable inside the conduit. A conduit cable gland adds cable-sealing functionality to this junction: it grips the cable jacket via an internal seal, so the IP rating at the entry point is maintained regardless of what happens further along the conduit run. For full IP65 at the enclosure entry, a conduit cable gland is the correct specification. Please see the comparison table on this page.
Q5: What thread sizes do your conduit cable glands come in?
Our conduit cable glands are available across the full standard thread range: Metric (M16, M20, M25, M32, M40, M50, M63), NPT (1/2″, 3/4″, 1″, 1-1/4″, 1-1/2″), and PG thread (PG 11, PG 16, PG 21, PG 29). The 20mm conduit cable gland (M20 thread) is our most commonly ordered size, covering the standard 20mm knockout in both steel and PVC conduit applications. Please refer to the size chart on this page or contact us for custom sizes.
Q6: Can I use a brass cable gland for plastic (PVC) conduit?
Yes — a brass cable gland is fully compatible with PVC (plastic) conduit, and it is a common combination in industrial installations. When connecting a brass conduit gland to a PVC conduit, use a compression-type gland rather than a threaded barrier type, since most PVC conduit is not threaded. Our compression conduit glands in brass are specifically sized for standard PVC conduit outer diameters and provide a secure, IP65-rated seal at the conduit-to-enclosure entry point. For all-plastic installations or where galvanic compatibility is important, we also offer nylon conduit cable glands.
Q8: What is the minimum order quantity for bulk conduit cable gland supply?
Our standard MOQ for conduit cable glands is 200 pieces per SKU for standard sizes in our established range. For custom configurations — specific conduit OD fits, extended thread lengths, or special materials — MOQ is typically 500 pieces. We support project-based purchasing with flexible scheduling and can supply mixed-SKU orders for conduit gland kits covering a full cable schedule. Contact us with your bill of materials and we will provide project-specific pricing and lead time.
Contact Difvan Directly
Response within 24 hours. Factory direct — no middlemen.
No.1 HongQi Road, Xinguang Industrial Zone,
Liushi, Yueqing, Wenzhou, Zhejiang, China 325603
Why Panel Builders and Procurement Teams Choose Difvan for Conduit Cable Glands
Here is what sets our conduit cable gland supply apart from the alternatives your team may already be considering:
What We Offer | What This Means for Your Project |
|---|---|
Direct Manufacturer | You buy from the factory — no distributor margin, no intermediary who does not understand the technical spec. Faster responses, better pricing, direct access to production. |
Full Conduit Gland Range | Barrier, compression, and flexible conduit types — metric, NPT, and PG — in brass, SS-316, and nylon. One supplier covers your entire conduit cable gland bill of materials. |
M20 Always in Stock | The 20mm conduit cable gland (M20 thread) is our highest-volume size and held in continuous production stock in brass and nylon. No waiting on lead time for your most common size. |
CE & RoHS Documentation | Every order ships with CE declaration and RoHS compliance. No chasing documentation after delivery — it comes with the product as standard. |
Brass for PVC Conduit — Ready | Our brass compression conduit glands for plastic conduit are a stock item. If you are specifying brass cable glands for PVC conduit entries, we can fulfil from stock. |
Bulk & Project Supply | We support single-project purchasing, ongoing call-off orders, and framework supply agreements. Whatever your buying model, we can structure supply around it. |
25+ Years Manufacturing | Our factory in Yueqing has produced industrial cable management components since 1997. Conduit cable glands are a core product line — not an afterthought. |
Samples Before Bulk Order | We send samples before you commit to bulk. If the fit, finish, or performance is not right for your application, you find out before — not after — you have placed your order. |
Request a Quote — Conduit Cable Glands
Whether you need 200 pieces of M20 brass barrier conduit glands for a panel project or a full range of compression conduit fittings for ongoing distribution — we can fulfil it. Send us your specification and we will return pricing and lead time within 24 hours.
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