Rubber Washers
Precision manufactured elastomeric flat washers, cup washers, and countersunk screw seals designed to prevent fluid leakage along bolt shanks, isolate structural vibration, and cushion bolted joints against surface cracking.
Types & Configurations of Rubber Washers
Standard Metric & Imperial Flat Washers
Precision punched and molded washers matching M3 to M64 bolt diameters.
Countersunk Screw Sealing Washers
Tapered rubber washers designed to seal flush beneath countersunk flat-head screws.
EPDM-Bonded Galvanized Steel Washers
Composite washers for roofing screws providing weather-tight seal under high torque.
Step & Shoulder Insulating Washers
Elastomeric shoulder washers preventing metal-to-metal bolt contact in acoustic panel frames.
High-Torque Flange Sealing Washers
Reinforced rubber washers withstanding heavy torque without extruding from under bolt heads.
Key Industrial Applications
Specifications & Technical Details
Rubber Washers can be precision-manufactured in custom dimensions, wall thicknesses, cross-sections, and durometers to match your exact application specifications. Below are typical engineering cross-section drawings and technical parameters for reference.
Typical Dimension Drawings & Blueprint Cross-Sections
Technical Specifications
| Parameter | Specification / Options |
|---|---|
| Inner Diameters (ID) | 2.5mm up to 250mm ID |
| Outer Diameters (OD) | 6.0mm up to 400mm OD |
| Thickness Range | 0.5mm up to 20.0mm thickness |
| Tolerance Standard | ISO 3302-1 Class M2 precision molded / DIN 7715 |
| Durometer Hardness | 40A, 50A, 60A, 70A, 80A Shore A |
| Polymer Options | Nitrile (NBR), EPDM, Neoprene (CR), Viton® (FKM), Silicone, Natural Rubber |
| Operating Temp | -50°C to +220°C (compound dependent) |
Material Selection & Properties
We offer specialized compound formulations tailored to chemical media, thermal extremes, static deflection, and dynamic fatigue requirements. The best material depends on your operating environment and required service life.
| Material / Polymer | Key Engineering Properties | Recommended Applications & Considerations |
|---|---|---|
| Natural Rubber (NR) | High tensile strength & dynamic resilience | General industrial mounts, automotive bushings |
| Nitrile (NBR) | Superior petroleum oil, fuel & grease resistance | Hydraulic cylinder seals, oil gaskets, fuel lines |
| EPDM | Outstanding weather, ozone, UV & steam stability | Outdoor enclosures, HVAC seals, automotive weatherstrips |
| Neoprene (CR) | Moderate oil resistance, flame retardant, ozone stable | Marine gaskets, vibration pads, railway seals |
| Silicone (VMQ) | Extreme thermal range (-60°C to +250°C), food grade | Food processing, pharmaceutical, high-heat gaskets |
| Viton® (FKM) | High chemical, acid & high temp resistance up to 220°C | Aerospace fuel seals, chemical processing pumps |
Important Engineering Guidance
The above properties are general characteristics. Final material selection depends on your specific application, operating conditions, load requirements, media compatibility, and service temperature. Please contact our polymer engineering team for tailored compounding guidance on Rubber Washers.
Production Batch Gallery
Actual production batch examples of Rubber Washers manufactured for OEM, automotive, railway, and heavy engineering clients. We manufacture standard catalogue sizes as well as bespoke custom geometries from your CAD models or physical samples.
Request an Engineering Quote
Share your required dimensions, polymer grade, or 2D/3D drawings for immediate engineering review and quote.