SBR Rubber Washers
SBR (styrene-butadiene rubber) is the most economical solid elastomer washer in our inventory. Cannon Gasket die-cuts custom SBR washers for indoor industrial assemblies where moderate performance is acceptable and unit cost is the driving factor.
- Durometer
- 20A to 80A
- Highlight
- Cost-effective compound
Request a quote for SBR rubber washers.
Properties of SBR rubber washers
Cannon Gasket cuts SBR rubber washers to your specifications in durometers ranging from 20A to 90A Shore hardness.
SBR tolerances and customization
Standard dimensional tolerances on SBR 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 SBR 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 SBR Performs in Washer Applications
- Good abrasion resistance and tensile strength. - Moderate water and dilute acid resistance. - Poor resistance to oil, fuel, ozone, weather.
Common Washer Applications
Dust covers, indoor vibration pads, sealed assemblies not exposed to oil or sunlight, and applications where unit cost is the priority.
When Another Material Is the Better Specification
Any oil / outdoor / temperature exposure rules out SBR — specify Buna-N, EPDM, or Viton.
Manufacturing Methods
Die-cut and lathe cut manufacturing. Cloth inserted and Nylon reinforced compounds available.
SBR mechanical properties
SBR is a copolymer of styrene and butadiene with properties similar to natural rubber. It offers good abrasion resistance and excellent impact strength
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.