Urethane Rubber Washers
Urethane is the common shop-floor name for polyurethane (PU); they are the same material, die-cut by Cannon Gasket under both names. Urethane rubber washers deliver outstanding abrasion resistance, tear strength, and load-bearing capacity that far exceed conventional rubber compounds, which makes them the preferred choice for high-wear applications in mining, material handling, and heavy equipment. Parts can be marked to customer specifications or MIL-STD-130, with ISO Class 10,000 clean room manufacturing available on request. For full material detail see the Polyurethane Rubber Washers page.
- Durometer
- 60A to 95A
- Highlight
- Excellent tensile strength
Request a quote for Urethane rubber washers.
Properties of Urethane rubber washers
Cannon Gasket cuts Urethane rubber washers to your drawing in durometer and thickness specifications of 60A to 95A Shore hardness. Good resistance to oils, greases, oxygen, and ozone. Not recommended for hot water, steam, or concentrated acids.
Urethane tolerances and customization
Standard dimensional tolerances on Urethane rubber washers land around ±0.010" to ±0.015" on OD and ID, depending on material durometer and thickness. Tighter tolerances are available on selected grades. Cannon Gasket cuts Urethane to custom profiles in-house and matches lead times to your production volume. PSA backing, pad printing, custom packaging, and kitting are all on the menu when you need them.
Quick Reference
Service temperature -30°F to +200°F. Exceptional abrasion and tear resistance. Load-bearing under bolt clamp. Durometers 60 to 95 Shore A. Common in mining, hydraulic, automotive suspension, and wear-pad applications.
Standard sizes, tolerances & manufacturing
Precision & tooling: Capable of holding tolerances as tight as ±.001" on critical dimensions when required, beyond the ±0.010" to ±0.015" standard. Short- and long-run capabilities. All parts available with pressure-sensitive adhesive (PSA) on one or two sides.
Clean room: Cannon Gasket offers clean-environment stamping for medical, FDA, electronic, and scientific applications where a controlled level of particulate is required, with capabilities to meet ISO Class 10,000.
Stocking agreements: Blanket orders, VMI (vendor-managed inventory), JIT (just-in-time), and Kanban replenishment programs.
Pad printing: Pad print your part number, identification marking, or company name in a range of ink colors. Marking per customer specifications or MIL-STD-130.
Packaging: Parts are bagged and tagged in specified quantities and labeled with P/N or any required information. Capability to meet specific packaging and labeling requirements.
Standard Screw Size Rubber Washers
| Screw Size | Outside Diameter | Inside Diameter | Thickness |
|---|---|---|---|
| #6 Standard | 0.250" | 0.120" | 0.015" – 0.250" |
| #6 Option | 0.375" | 0.120" | 0.015" – 0.250" |
| #8 Standard | 0.312" | 0.150" | 0.015" – 0.250" |
| #8 Option | 0.438" | 0.150" | 0.015" – 0.250" |
| #10 Standard | 0.375" | 0.170" | 0.015" – 0.250" |
| #10 Option | 0.500" | 0.170" | 0.015" – 0.250" |
| #12 Standard | 0.437" | 0.195" | 0.015" – 0.250" |
| #12 Option | 0.562" | 0.195" | 0.015" – 0.250" |
| #14 Standard | 0.500" | 0.230" | 0.015" – 0.250" |
| #14 Option | 0.625" | 0.230" | 0.015" – 0.250" |
| 5/16" Standard | 0.562" | 0.290" | 0.015" – 0.250" |
| 5/16" Option | 0.688" | 0.290" | 0.015" – 0.250" |
| 3/8" Standard | 0.625" | 0.355" | 0.015" – 0.250" |
| 3/8" Option | 0.812" | 0.355" | 0.015" – 0.250" |
| 1/2" Standard | 1.062" | 0.490" | 0.015" – 0.250" |
| 3/4" Standard | 1.500" | 0.740" | 0.015" – 0.250" |
Standard RMA Thicknesses and Tolerances for Elastomers
| Nominal Thickness | Tolerance |
|---|---|
| 0.015" | ±0.010" |
| 0.031" | ±0.012" |
| 0.062" | ±0.016" |
| 0.093" | ±0.016" |
| 0.125" | ±0.020" |
| 0.187" | ±0.031" |
| 0.250" | ±0.031" |
| 0.375" | ±0.047" |
| 0.500" | ±0.047" |
Standard references shown. Cannon Gasket also cuts custom outside diameters, inside diameters, and thicknesses to your drawing. Send your specifications for a quote.