Family names are only a starting point. Temperature, fluid, pressure, compression, movement, finish, certifications, and the exact compound all affect suitability. Verify the actual application requirement before ordering.
Compare the available rubber gasket families
Oil-resistant tendency
Buna-N / NBR
1/32 · 1/16 · 1/8 in
- Known for
- Good broad resistance to many petroleum oils, greases, fuels, and hydrocarbons.
- Common examples
- Oil pans, fuel-system covers, hydraulic equipment, pumps, and industrial machinery.
- Watch for
- Outdoor ozone and weather exposure are generally not its strength; fuel blends and temperatures still require grade-specific verification.
Water and weather tendency
EPDM
1/32 · 1/16 · 1/8 in
- Known for
- Water, weather, ozone, outdoor aging, and many coolant or steam applications when the exact grade fits.
- Common examples
- Water pumps, radiator and coolant joints, outdoor enclosures, HVAC covers, and weather-exposed equipment.
- Watch for
- EPDM is generally a poor match for petroleum oils, gasoline, and hydrocarbon fuels.
Temperature flexibility tendency
Silicone
1/32 · 1/16 · 1/8 in
- Known for
- Flexibility across a broad temperature span plus weather, ozone, and compression-set performance.
- Common examples
- Appliance and oven covers, dry-heat equipment, outdoor housings, and selected water-service joints.
- Watch for
- Fuel resistance, tear strength, abrasion resistance, and certifications vary greatly by compound.
Choose by the service, not the color
- List every fluid, cleaner, additive, vapor, and possible contaminant.
- Record the normal and worst-case temperature, pressure, or vacuum.
- Note whether the joint is indoors, outdoors, moving, vibrating, or frequently opened.
- Confirm flange finish, available bolt load, gap, and the original gasket thickness.
- Check manufacturer documentation or compound data for the actual application.
Shapes and quantities
The designer supports solid or hollow circles, rectangles, rounded rectangles, ovals, capsules, rings, custom line-and-curve outlines, circular holes, square or rectangular openings, slots, custom cutouts, and bolt circles. The online part envelope is 29.00 x 15.25 inches in either orientation, with listed rubber sheet up to 1/8 inch.
How custom rubber gasket pricing works
The server calculates price from material and thickness, the area of rubber used, total cut length, feature count and complexity, quantity, setup, and any rush selection. The current total is shown before Stripe checkout; shipping is calculated separately.