Multi Cable Transit Manufacturer · China Factory-Direct
Multi Cable Transit System
China Leading Manufacturer.
DEWIN manufactures modular cable transit systems -- rectangular modules, circular assemblies, and transit frames -- dimensionally compatible with common 120-frame standards.
Factory-direct pricing at 40-60% below established European brands. 38+ patents. ISO 9001 & IATF 16949 certified. BV-approved facility. Free samples and cross-reference tables to validate fit before you commit.
Why engineers switch to DEWIN
The numbers your engineering team needs before approving a second source.
Every claim below is backed by test documentation available on request. We never publish a rating without a report to match.
Fire Rating
A-0 / A-60
Test documents on request
Ingress Protection
IP68
Watertight & gas-tight
Sealing Pressure
0.4 MPa
Model-dependent, up to
Cost Savings
40-60%
vs. established EU brands
Product range · 01 of 03
Rectangular Sealing Modules -- TSC Series
Step-core EPDM modules that fit standard 120-frame cut-outs. Each module adapts to a range of cable diameters -- one SKU covers multiple cables, reducing your inventory.
| Model | Frame Size | Cable Range | Sealing | Material |
|---|---|---|---|---|
| TSC-120/40 | 120 × 40 mm | ⌀ 4-22 mm | 0.01-0.4 MPa | EPDM, halogen-free |
| TSC-120/60 | 120 × 60 mm | ⌀ 4-34 mm | 0.01-0.4 MPa | EPDM, halogen-free |
| TSC-120/80 | 120 × 80 mm | ⌀ 4-44 mm | 0.01-0.4 MPa | EPDM, halogen-free |
| TSC-120/120 | 120 × 120 mm | ⌀ 4-64 mm | 0.01-0.4 MPa | EPDM, halogen-free |
RoHS compliant. Full sizing guide available on request.
Product range · 02 of 03
Circular Sealing Modules -- TSR Series
Round sealing assemblies for circular penetrations. Same step-core technology, same material quality, engineered for pipe and cable entries in round cut-outs.
| Model | Cut-Out | Cable Range | Sealing | Material |
|---|---|---|---|---|
| TSR-040 | ⌀ 40 mm | ⌀ 4-18 mm | 0.01-0.4 MPa | EPDM, halogen-free |
| TSR-060 | ⌀ 60 mm | ⌀ 6-28 mm | 0.01-0.4 MPa | EPDM, halogen-free |
| TSR-080 | ⌀ 80 mm | ⌀ 8-42 mm | 0.01-0.4 MPa | EPDM, halogen-free |
Custom diameters available with in-house mold making.
Product range · 03 of 03
Rectangular Transit Frames
Galvanized steel or stainless steel frames engineered for wall and bulkhead mounting. Dimensionally compatible with common 120-frame standards -- drop-in replacement, no rework required.
| Your Current Part | DEWIN Equivalent | Frame Cut-Out | Fit Check |
|---|---|---|---|
| 120-frame, 8 modules | TSC-120/40 | 122 × 42 mm | Drop-in, no rework |
| 120-frame, 12 modules | TSC-120/60 | 122 × 62 mm | Drop-in, no rework |
| 120-frame, 16 modules | TSC-120/80 | 122 × 82 mm | Drop-in, no rework |
| Round transit ⌀ 60 | TSR-060 | ⌀ 62 mm | Confirm wedge type |
Material options: hot-dip galvanized steel, 304 SS, 316L SS.
Customization
Engineered to your specification, not ours.
With in-house mold making and a dedicated engineering team, we adapt our standard product range to your exact requirements. Custom orders start from 100 pieces.
Dimensions
Custom Frame Sizes
Non-standard cut-out dimensions, wall thicknesses, and mounting configurations. In-house CNC and mold shop -- no third-party delay.
Discuss your dimensions →Material
Rubber & Metal Options
Standard EPDM, silicone for high-temperature applications, NBR for oil resistance. Frame materials from galvanized steel to 316L stainless.
Specify your material →Branding
OEM / Private Label
Your logo molded into rubber modules, custom colour coding, branded packaging and documentation. Full white-label programs supported.
Start OEM discussion →Performance
Enhanced Ratings
Higher fire ratings, increased pressure classes, or special EMC shielding -- engineered and tested to your project specification.
Define your requirements →Packaging
Kitting & Assembly
Pre-assembled frame + module kits, project-specific labelling, and palletisation to your warehouse standard. Reduce your incoming inspection time.
Request kitting options →Documentation
Custom Test Reports
Project-specific test reports, material certificates per batch, and declaration of conformity documents formatted to your template.
Request documentation →Production process
From raw compound to sealed penetration -- eight controlled steps.
Every step is performed in our own factory. No outsourced sub-processes, no gaps in traceability.
Step 01
Material Mixing
Halogen-free EPDM compound formulated in-house. Each batch tested for hardness, tensile strength, and elongation before release.
Step 02
Material Vulcanization
Compound cured under controlled temperature and time to achieve target cross-link density and mechanical properties.
Step 03
Module Block Moulding
Vulcanized compound pressed into module blocks using in-house CNC-machined molds. Cavity dimensions checked against engineering drawing.
Step 04
Concentric Layer Making
Step-core concentric layers built into each block, allowing one module size to seal multiple cable diameters.
Step 05
Module Assembly
Concentric-layer blocks bonded and reinforced into complete sealing modules, ready for sizing operations.
Step 06
Module Cutting
Assembled modules precision-cut to final module width, matched to standard 120-frame layer increments.
Step 07
Trimming & Grinding
Flash removed and sealing faces ground smooth. Parting lines inspected under magnification -- no rough edges on sealing surfaces.
Step 08
Assemble & Packing
Modules matched to frames, compression tested, and packed to export standard. Each carton labelled with batch and traceability data.
Quality control
Seven inspection checkpoints -- nothing ships unchecked.
ISO 9001 and IATF 16949 are not wall decorations. Each checkpoint has a documented procedure, an acceptance criterion, and an escalation path when something fails.
| # | Checkpoint | Method | Accept / Reject Criteria | Record |
|---|---|---|---|---|
| 01 | Raw material test | Hardness, tensile, elongation test | Per compound specification sheet | Material COA |
| 02 | Mold condition | Visual + dimensional gauge | Cavity wear within tolerance | Mold log |
| 03 | Vulcanization parameters | Press data logger | Temp ± 3°C, time ± 5s | Batch record |
| 04 | Post-cure dimensions | CMM / caliper sampling | Drawing tolerance ± 0.3 mm | Inspection report |
| 05 | Surface & appearance | 100% visual under standard light | No flash, no voids, no discoloration | QC pass stamp |
| 06 | Frame dimensions | CMM / fixture gauge | Drawing tolerance ± 0.2 mm | Frame inspection report |
| 07 | Final assembly + seal test | Compression check + random IP test | Specified pressure hold 10 min | Test certificate |
Full inspection procedure documentation provided with first shipment on request.
Factory evidence
A real factory. Verified, certified, and open to audit.
Established in 2013. Registered capital RMB 50 million. Three production facilities. We welcome customer audits and third-party inspections at any time.
Certification Matrix
| Standard | Scope | Status | Evidence |
|---|---|---|---|
| ISO 9001 | Quality management, all production lines | Certified | Certificate on request |
| IATF 16949 | Automotive quality management, all lines | Certified | Certificate on request |
| Bureau Veritas | Factory audit and verification | Approved | BV report on request |
| RoHS | All EPDM compounds | Compliant | Test report per compound |
| Fire rating A-0/A-60 | Sealing modules and frames | Documents on request | Report reference with quote |
| IP68 | Complete MCT assemblies | Tested | Test report on request |
2013
Established
38+
Granted Patents
3
Production Facilities
50M
RMB Registered Capital
Applications
Where DEWIN MCT systems are installed.
Named by the industry you work in, not by our internal product codes.
Energy Storage
BESS Containers
Sealed entries between battery and control compartments. Fire-rated, watertight, re-openable for maintenance access.
Get BESS sizing guide →
Data Centre
Modular Halls
Dense penetrations through prefabricated panels. Re-openable for later cable additions without compromising the original seal.
Get data centre guide →
Switchgear
Control Panels
Standard 120-frame cut-outs mean your existing enclosure needs no modification. Drop-in second sourcing without engineering change.
Get switchgear guide →
Marine / Shipbuilding
Luxury Cruise Ships, FPSO & More
Watertight and gas-tight bulkhead penetrations for A-60 fire-rated divisions. Suitable for luxury cruise vessels, FPSO units, and commercial shipping where marine type-approval is required.
Get marine sizing guide →
Offshore Engineering
Wind Power & Oil Drilling Platforms
Cable and pipe penetrations for offshore wind turbine platforms and oil drilling rigs. IP68 ingress protection and halogen-free EPDM withstand harsh marine environments and hazardous area requirements.
Get offshore guide →
Onshore Petrochemical
Electrical Distribution Rooms
Sealed cable entries for electrical distribution rooms in refineries and chemical plants. Fire-rated and gas-tight sealing prevents flame and toxic gas propagation between compartments.
Get petrochemical guide →
Nuclear Industry
Electromagnetic Shielding
Cable penetrations through electromagnetic shielding walls in nuclear facilities. Maintains shielding integrity while providing watertight, re-openable sealing for instrumentation and power cables.
Get nuclear guide →Take action now
Send your enquiry.
Hear back within one working day.
Attach a drawing or specification and we will confirm dimensional compatibility, provide a cross-reference table, and quote with factory-direct pricing -- all before you request a sample.
Free samples for validation testing
Cross-reference table: your model → DEWIN model
CAD / STEP files provided before order
Test documentation and certificates on request
Reply from an engineer, in English, within one working day
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