Double-Lip Gland Washer
The Double-Lip Gland Washer is engineered to provide enhanced environmental sealing and mechanical retention for cable entries in industrial enclosures. Featuring a dual-lip geometry, the primary lip forms an immediate barrier against dust and moisture ingress, while the secondary lip provides mechanical stability and strain relief against dynamic cable pull forces.
Product Overview
The Double-Lip Gland Washer is engineered to provide enhanced environmental sealing and mechanical retention for cable entries in industrial enclosures. Featuring a dual-lip geometry, the primary lip forms an immediate barrier against dust and moisture ingress, while the secondary lip provides mechanical stability and strain relief against dynamic cable pull forces.
Directly manufactured via precision compression molding, our washers support standard metric, PG, and NPT thread configurations utilized in heavy-duty electrical cabinets, automation hardware, and outdoor junction boxes.
Engineering Support: Downloadable 2D drawings and 3D STEP files are available for all standard catalog sizes to streamline immediate CAD integration and design validation.
Key Features
Dual-Lip Sealing Profile: Two independent sealing stages prevent liquid migration and resist mechanical vibration loosening over long operational cycles.
Controlled Compression: Optimized Shore hardness geometry ensures uniform radial expansion without over-compressing or deforming the cable jacket.
Material Resilience: Tailored elastomer formulations resist long-term UV exposure, ozone degradation, and industrial oils.
Vibration Resistance: The secondary lip dampens dynamic stress transferred from heavy conduits or armored cabling.
Technical Specifications
|
Parameter |
Specification |
|
Thread Standards |
Metric (M12 to M63), PG (PG7 to PG48), NPT (3/8" to 2") |
|
Clamping Range |
3.0 mm to 44.0 mm (dependent on thread size) |
|
Standard Materials |
EPDM, NBR (Nitrile Rubber), Silicone, FKM (Viton) |
|
Operating Temperature |
EPDM: -40°C to +120°C; NBR: -30°C to +100°C; Silicone: -50°C to +180°C |
|
Ingress Protection |
Up to IP68 (when correctly matched with panel wall thickness and cable OD) |
|
Color Options |
Black (RAL 9005), Grey (RAL 7035), White (RAL 9003), or custom matched |
Product Options
Material Selection
EPDM: Standard choice for outdoor UV resistance, ozone exposure, and broad weatherability.
NBR: Recommended for indoor oily, greasy, or pneumatic-heavy factory environments.
Silicone: Specified for extreme high or low-temperature industrial processes.
Hardness Grades: Shore A 50 to 70 available to balance sealing pressure with smooth cable insertion force.
Configuration Options: Standard flat-face washers or stepped outer-diameter profiles engineered for specific proprietary gland bodies.
Applications
Electrical Control Panels: Sealing incoming power and signal lines on floor-standing automation cabinets.
Industrial Machinery: Protecting control junction boxes on CNC machines and automated manufacturing lines against coolant spray.
Outdoor Equipment: Weatherproofing telecommunication boxes, solar inverter housings, and roadside traffic control units.
HVAC Systems: Sealing cable entry points exposed to high humidity, condensation, and temperature cycling.
OEM & ODM Customization
Manufacturing operations utilize in-house CNC mold tooling and automated rubber injection presses to fulfill non-standard requirements:
Custom Dimensions: Non-standard outer diameters, inner bores, or thickness profiles built for proprietary fittings.
Special Compounds: Custom elastomer compound blending tailored for specialized chemical resistance (e.g., weak acids, specific hydraulic fluids).
Packaging Solutions: Bulk industrial bagging, barcoded labeling, or kitting with matching cable glands per customer bill of materials (BOM).
Quality Control
Production relies on statistical process control (SPC) and strict testing protocols across every manufacturing lot:
Visual Standards: High-resolution macro inspection ensures clean molding flash edges and defect-free double-lip profiles.
Dimensional Inspection: Optical comparators verify inner bore, outer diameter, and lip thickness tolerances within +/- 0.05 mm.
Material Verification: Incoming elastomer batches undergo durometer hardness testing and tensile strength validation.
Sealing Performance Testing: Sample lots undergo IP68 immersion and pneumatic pressure decay tests.
Documentation: Material safety data sheets (MSDS), RoHS/REACH compliance declarations, and lot-specific Certificates of Conformance (CoC) are supplied upon request.
Frequently Asked Questions
Q: How do I select the correct washer size for my cable?
A: Choose a washer whose inner clamping range tightly brackets your cable outer diameter (OD). For optimal sealing, the cable OD should fall within the middle 60% of the specified clamping range.
Q: Which material should I choose for outdoor solar installations?
A: EPDM is recommended for outdoor solar applications due to its superior inherent resistance to UV radiation, ozone, and continuous weathering.
Q: Can these washers handle continuous mechanical vibration?
A: Yes. The secondary lip absorbs micro-movements, preventing the seal from shifting or losing torque under dynamic vibration from nearby heavy equipment.
Q: What is the standard Minimum Order Quantity (MOQ)?
A: Standard stock sizes carry an MOQ of 1,000 pieces per size and material. Custom tooling or special compound runs require project-specific review.
Q: What is the typical lead time for production orders?
A: Standard catalog items ship within 3 to 7 business days. Custom molded parts typically require 15 to 20 business days, inclusive of tooling and sample approval.
Q: Are material test reports included with shipments?
A: Certificates of Conformance (CoC) and material batch test data are available upon request during order placement.
Request a Quote
Submit the following parameters for prompt engineering review and quotation:
Product Model / Part Number (if known)
Required Quantity (annual usage or per-batch order volume)
Thread Standard & Size (e.g., Metric M20, PG13.5, NPT 1/2")
Cable Outer Diameter (OD)
Material Preference (EPDM, NBR, Silicone, etc.)
Special Requirements (custom thickness, specialized packaging, or compliance certificates)
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