Flat Gland Sealing Washer
The Flat Gland Sealing Washer establishes a secure, liquid-tight secondary seal between cable entry threads and electrical enclosure walls. Engineered to maintain ingress protection up to IP68 (5 bar), it prevents moisture, dust, and aggressive cutting fluids from penetrating control panels and industrial machinery housings. Built for automated assembly, reliable torque retention, and long-term service in harsh operating environments.
Product Overview
The Flat Gland Sealing Washer establishes a secure, liquid-tight secondary seal between cable entry threads and electrical enclosure walls. Engineered to maintain ingress protection up to IP68 (5 bar), it prevents moisture, dust, and aggressive cutting fluids from penetrating control panels and industrial machinery housings. Built for automated assembly, reliable torque retention, and long-term service in harsh operating environments.
Key Features
Polymer Compound Integrity: Molded from prime-grade elastomers (EPDM, NBR, Silicone, PTFE) formulated for specific resistance to thermal aging, ozone, and chemical exposure.
Uniform Clamping Distribution: Precision flat cross-section spreads radial and axial pressure evenly across mating surfaces, preventing localized deformation and seal blowout.
Elastic Memory: Maintains constant sealing tension under continuous mechanical vibration, shock, and thermal expansion cycles.
Thermal Endurance: Engineered for continuous stability from -40°C to +120°C (standard EPDM/NBR) and up to +200°C (specialty silicone).
Technical Specifications
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Thread Standards |
Metric (M12 to M63), PG (PG7 to PG48), NPT, and G (PF) parallel threads. |
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Standard Thickness |
1.5 mm, 2.0 mm, 3.0 mm (custom dimensional tolerances available upon request). |
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Material Options & Chemical Compatibility |
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EPDM |
Superior ozone, UV, and weathering resistance (ideal for outdoor installations). |
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NBR (Nitrile) |
High resistance to petroleum-based oils, hydraulic fluids, and coolants. |
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Silicone |
Extreme low/high temperature flexibility and medical/food-grade purity. |
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PTFE |
Maximum resistance to concentrated acids, alkalis, and aggressive solvents. |
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Hardness Range |
60° to 70° Shore A. |
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Ingress Protection |
Supports IP66, IP67, and IP68 compliance. |
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Regulatory Compliance |
RoHS, REACH, and UL 94 HB/V-0 flame retardant grades available. |
Product Options & Engineering Resources
Standard Series Availability: Full metric and PG size matrices in stock; standard colors include Black, Grey (RAL 7035), and White.
Precision Custom Sizing: Customized inner bores and outer diameters tailored to proprietary cable gland barrels without stretching or pinching.
Digital Engineering Support:
2D & 3D CAD Models: Step and IGES formats available for instant integration into electrical schematics and panel design software.
Cross-Reference Selection Chart: Standardized matching table aligning thread size, mounting hole diameter, and recommended washer thickness to prevent procurement mismatches.
Applications
Electrical control panels, switchgear, and factory automation enclosures.
Outdoor junction boxes, security camera housings, and telecommunication distribution boxes.
Heavy industrial machinery, robotics cable routing, and conduit systems.
HVAC equipment, marine instrumentation, and renewable energy inverters.
OEM & ODM Customization Capabilities
In-House Mold Development: Rapid prototype tooling for non-standard washer dimensions, eccentric inner holes, or integrated multi-rib sealing geometries.
Custom Compounding: Polymer blending tailored to unique chemical exposure profiles or strict regional fire-safety mandates.
Flexible Packaging Options: Bulk industrial bagging, automated pick-and-place carrier strips, or pre-kitted packaging supplied alongside matching cable glands.
Quality Control & Manufacturing Evidence
Optical Profile Inspection: Automated dimension screening verifying inner diameter, outer diameter, and thickness within strict tolerances (±0.1 mm).
Compression Set Testing: Laboratory validation of elastic recovery and permanent deformation resistance under sustained compressive loads.
Batch Traceability: Full raw material lot tracking back to verified polymer compounders.
Documentation Support: Material Test Reports (MTR), Certificate of Analysis (CoA), RoHS, and REACH compliance declarations supplied with every production batch.
Frequently Asked Questions
Q: How do I select the correct washer size for my cable gland?
A: Match the nominal thread standard and size (e.g., Metric M20) and verify that the inner diameter aligns with the gland's thread barrel diameter.
Q: Which material should I choose for outdoor solar or telecom installations?
A: EPDM is recommended for general outdoor exposure due to its exceptional resistance to ozone and ultraviolet (UV) radiation. Use Silicone for extreme sub-zero or high-heat environments.
Q: Can these washers withstand heavy machine coolants and cutting oils?
A: Yes. NBR (Nitrile) variants are specifically compounded to resist petroleum-based industrial oils, greases, and synthetic machine coolants.
Q: What is the standard minimum order quantity (MOQ)?
A: Standard stocked dimensions have an MOQ of 1,000 pieces. Custom dimensions or specialized polymer formulations start at 5,000 pieces per production run.
Q: What is the standard production lead time?
A: Standard catalog items ship within 3 to 5 business days. Custom molded configurations require 10 to 15 business days, including tooling sign-off.
Q: Do you provide evaluation samples and CAD data for testing?
A: Yes. Physical prototype samples and 2D/3D CAD models are available for engineering qualification and laboratory testing upon request.
Request a Quote & CAD Files
Please provide the following technical details to receive an immediate quotation and access engineering downloads:
Thread Standard & Size: (e.g., Metric M20, PG13.5, NPT 1/2")
Material Preference: (e.g., EPDM, NBR, Silicone, PTFE)
Dimensions (if custom): (Inner Diameter × Outer Diameter × Thickness)
Estimated Annual Volume / Order Quantity:
Special Requirements: (e.g., UL 94 flame rating, specific chemical resistance, custom packaging, CAD download request)
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