EPDM Rubber Washers
EPDM rubber washers are the specification when the washer is exposed to water, steam, outdoor weather, or ozone. Cannon Gasket die-cuts custom EPDM washers for plumbing fittings, irrigation valves, pool and spa equipment, HVAC service, and outdoor industrial sealing. Available in commercial, high-grade, military-spec, peroxide-cured, FDA, and cloth-inserted grades.
- Durometer
- 10A to 90A
- Highlight
- Superior ozone/UV resistance
Request a quote for EPDM rubber washers.
Properties of EPDM rubber washers
Cannon Gasket cuts EPDM rubber washers to your specifications in durometers ranging from 10A to 90A Shore hardness. EPDM exhibits resistance to Ozone, UV, sunlight, water, steam, brake fluid (DOT types), dilute acids, and alkalis.
EPDM tolerances and customization
Standard dimensional tolerances on EPDM 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 EPDM 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.
How EPDM Performs in Washer Applications
- Superior resistance to ozone, UV, sunlight, water, and steam. - Excellent compression set in peroxide-cured grades for long-service-life washers. - Available in solid and sponge / foam grades.
Common Washer Applications
Plumbing fitting sealing washers, irrigation valve washers, pool and spa pump and filter sealing, HVAC condenser and air-handling unit washers, outdoor enclosure cover bolts, and drinking-water-rated FDA EPDM compounds.
When Another Material Is the Better Specification
For oil or fuel contact, Buna-N. For high-temperature chemical service, Viton.
Manufacturing Methods
Die-cut and lathe-cut. PSA available 1 or 2 sides. Clean room manufacturing available.
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.