Viton® Rubber Washers
Viton® (fluorocarbon, FKM) rubber washers handle the chemical and thermal extremes that lower-grade elastomers cannot. Cannon Gasket die-cuts custom Viton washers for aviation fuel systems, chemical processing, semiconductor equipment, and oil and gas exploration hardware where service life under aggressive exposure matters more than unit cost. Available in commercial, high-grade, Extreme Viton, and FDA grades.
- Durometer
- 55A to 90A
- Highlight
- Superior chemical resistance
Request a quote for Viton / FKM rubber washers.
Properties of Viton / FKM rubber washers
Cannon Gasket cuts Viton / FKM rubber washers to your specifications in durometers ranging from 50A to 90A Shore hardness. Viton / FKM exhibits resistance to Petroleum fuels, oils, acids, aromatics, chlorinated solvents, and hydraulic fluids.
Viton / FKM tolerances and customization
Standard dimensional tolerances on Viton / FKM 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 Viton / FKM 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 Viton Performs in Washer Applications
- Broadest chemical resistance in our standard elastomer inventory. - Excellent resistance to fuels, oils, solvents, ozone, and UV. - Lower compression set than Buna-N over long service life.
Common Washer Applications
Aviation and high-performance fuel-system sealing, chemical processing equipment, semiconductor manufacturing, oil and gas exploration, refinery hardware, and aerospace propulsion systems.
When Another Material Is the Better Specification
For oil-only contact at moderate temperature, Buna-N (more economical). For water / steam / outdoor service, EPDM.
Manufacturing Methods
Die-cut and Lathe-cut. PSA available on 1 or 2 sides
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.