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About Durometer Hardness Scales
More
About Vibration-Damping Mounts
More
Heavy Duty Unthreaded Bumpers

All of these bumpers are reinforced with an embedded washer or base plate for strength. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. They're also good for starting and stopping motion on automated machines. Install them with screws. These bumpers are also known as recessed bumpers.
Bumpers with a hard and medium-hard rating withstand high levels of impact. The harder the bumper, the more impact it withstands.
Polyurethane bumpers have better abrasion resistance than SBR bumpers. They won't become brittle and crack when exposed to ozone, are nonmarking, and can be used outdoors.
For technical drawings and 3-D models, click on a part number.


Mounting Hole | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Mounting Surface Ht. | Counterbore Dia. | Dia. | Ctr.-to-Ctr. | Temp. Range, °F | For Use Outdoors | Hardness Rating | Hardness | Nonmarking | Color | Each | |
Polyurethane Rubber with Aluminum Base Plate | ||||||||||||||
1" | 1" | 3/4" | 1/8" | 7/16" | 9/32" | __ | -40° to 200° | Yes | Hard | Durometer 80A | Yes | Red | 00000000 | 00000 |
1 1/2" | 1 1/2" | 1" | 1/8" | 7/16" | 9/32" | 3/4" | -40° to 200° | Yes | Hard | Durometer 80A | Yes | Red | 00000000 | 00000 |
2" | 2" | 1" | 1/8" | 7/16" | 9/32" | 1 1/4" | -40° to 200° | Yes | Hard | Durometer 80A | Yes | Red | 00000000 | 00000 |
2 1/2" | 2 1/2" | 1" | 1/8" | 7/16" | 9/32" | 1 1/2" | -40° to 200° | Yes | Hard | Durometer 80A | Yes | Red | 00000000 | 00000 |
3" | 3" | 1 1/2" | 1/8" | 7/16" | 9/32" | 2" | -40° to 200° | Yes | Hard | Durometer 80A | Yes | Red | 00000000 | 00000 |
4" | 4" | 1 1/2" | 1/8" | 7/16" | 9/32" | 3" | -40° to 200° | Yes | Hard | Durometer 80A | Yes | Red | 00000000 | 00000 |
Unthreaded Bumpers

Install these bumpers with screws. Often used as feet, spacers, and vibration dampers, they absorb shock to prevent damage to equipment and surfaces. All have a hard rating to withstand high levels of impact. They're also known as recessed bumpers.
Polyurethane bumpers have better abrasion resistance than SBR bumpers. They won't become brittle and crack when exposed to ozone, are nonmarking, and can be used outdoors.
For technical drawings and 3-D models, click on a part number.

Lg. | Wd. | Ht. | Mounting Hole Dia. | Temp. Range, °F | For Use Outdoors | Hardness Rating | Hardness | Nonmarking | Color | Each | |
Polyurethane Rubber | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
2" | 2" | 1/4" | 7/16" | -10° to 170° | Yes | Hard | Durometer 75A | Yes | Black | 0000000 | 00000 |
2 1/16" | 2 1/16" | 7/16" | 3/8" | -10° to 170° | Yes | Hard | Durometer 75A | Yes | Black | 0000000 | 0000 |
2 1/16" | 2 1/16" | 15/16" | 3/8" | -10° to 170° | Yes | Hard | Durometer 75A | Yes | Black | 0000000 | 0000 |
Adhesive-Back Bumpers

Press these bumpers into place with the adhesive backing. Use them as feet and spacers on instruments and small appliances to limit sliding, vibration, and noise. They're comparable to Bumpon bumpers.
Bumpers with a soft rating offer cushioning. Bumpers with a medium and medium-soft rating offer a balance of cushioning and impact resistance. The softer the bumper, the more it cushions. Bumpers with an extra-hard and medium-hard rating withstand higher levels of impact than softer bumpers. The harder the bumper, the more impact it withstands.
Polyurethane bumpers have good abrasion resistance. They're also nonmarking. Plastic bumpers are chemical resistant and won't dry out and become brittle when exposed to UV rays. They're also nonmarking. They are not for use outdoors.
Polyethylene foam bumpers cushion during impact and are nonmarking. They are not for use outdoors.
Silicone foam bumpers cushion during impact and withstand a wider range of temperatures than other bumpers. They are nonmarking and can be used outdoors.
For technical drawings and 3-D models, click on a part number.

Lg. | Wd. | Ht. | Temp. Range, °F | For Use Outdoors | Hardness Rating | Hardness | Nonmarking | Choose a Color | Pkg. Qty. | Pkg. | |
Polyurethane Rubber | |||||||||||
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13/32" | 13/32" | 7/64" | 70° to 150° | Yes | Medium Hard | Durometer 65A | Yes | 121 | 00000000 | 00000 | |
1/2" | 1/2" | 1/8" | 70° to 150° | Yes | Medium Hard | Durometer 65A | Yes | 50 | 00000000 | 0000 | |
3/4" | 3/4" | 1/4" | 70° to 150° | Yes | Medium Hard | Durometer 65A | Yes | 49 | 000000000 | 0000 | |
3/4" | 3/4" | 3/8" | 70° to 150° | Yes | Medium Hard | Durometer 65A | Yes | 25 | 000000000 | 0000 | |
1" | 1" | 3/16" | 70° to 150° | Yes | Medium Hard | Durometer 65A | Yes | Black | 55 | 00000000 | 00000 |
1 1/2" | 1 1/2" | 1/4" | -20° to 190° | No | Extra Hard | Durometer 90A | Yes | Black | 5 | 000000000 | 00000 |
1 1/2" | 1 1/2" | 1/4" | -20° to 190° | No | Medium Soft | Durometer 40A | Yes | Black | 5 | 000000000 | 00000 |
2" | 2" | 1/4" | -20° to 190° | No | Extra Hard | Durometer 90A | Yes | Black | 5 | 000000000 | 00000 |
2" | 2" | 1/4" | -20° to 190° | No | Medium Soft | Durometer 40A | Yes | Black | 5 | 000000000 | 00000 |
Vinyl Plastic | |||||||||||
1/2" | 1/2" | 13/64" | 50° to 100° | No | Medium Hard | Durometer 60A | Yes | Black | 100 | 0000000 | 00000 |
Polyethylene Foam | |||||||||||
1/2" | 1/2" | 1/16" | 0° to 140° | No | Soft | Not Rated | Yes | Black | 80 | 000000 | 0000 |
1/2" | 1/2" | 1/8" | 0° to 140° | No | Soft | Not Rated | Yes | Black | 80 | 0000000 | 0000 |
3/4" | 3/4" | 1/16" | 0° to 140° | No | Soft | Not Rated | Yes | Black | 100 | 000000 | 0000 |
3/4" | 3/4" | 1/8" | 0° to 140° | No | Soft | Not Rated | Yes | Black | 100 | 0000000 | 0000 |
1" | 1" | 1/16" | 0° to 140° | No | Soft | Not Rated | Yes | Black | 96 | 000000 | 0000 |
1" | 1" | 1/8" | 0° to 140° | No | Soft | Not Rated | Yes | Black | 96 | 0000000 | 0000 |
Silicone Foam | |||||||||||
1/2" | 1/2" | 1/8" | -20° to 300° | Yes | Soft | Not Rated | Yes | Red | 20 | 000000 | 0000 |
1/2" | 1/2" | 3/16" | -20° to 300° | Yes | Soft | Not Rated | Yes | Red | 20 | 000000 | 00000 |
1/2" | 1/2" | 1/4" | -20° to 300° | Yes | Soft | Not Rated | Yes | Red | 10 | 000000 | 0000 |
1" | 1" | 1/4" | -20° to 300° | Yes | Soft | Not Rated | Yes | Red | 10 | 000000 | 00000 |
General Purpose Vibration-Damping Sandwich Mounts with Studs

Use these rubber sandwich mounts to minimize vibration between surfaces inside machinery and equipment, such as in circuit boards, small fans, compressors, and pumps. They're for use in compression and shear load applications.
Neoprene rubber has good resistance to weather and acids and moderate resistance to oils.
Natural rubber has superior resistance to tears and abrasion as well as good flexibility in cold temperatures.
For technical drawings and 3-D models, click on a part number.
Thread Size | Capacity per Mount, lbs. | Deflection @ Capacity | Shear Capacity per Mount, lbs. | Deflection @ Shear Capacity | Lg. | Wd. | Ht. | Thread Lg. | Hardness | Hardness Rating | Temp. Range, °F | Each | ||
Neoprene Rubber with Zinc-Plated Steel Stud | ||||||||||||||
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3 | 6-32 | 3 | 0.03" | Not Rated | Not Rated | 3/16" | 3/16" | 1/4" | 1/2" | Durometer 50A | Medium | 10° to 180° | 00000000 | 00000 |
3 | 10-32 | 8 | 0.05" | Not Rated | Not Rated | 3/8" | 3/8" | 1/2" | 1/2" | Durometer 50A | Medium | 10° to 180° | 00000000 | 0000 |
Natural Rubber with Zinc-Plated Steel Stud | ||||||||||||||
3 | 6-32 | 3 | 0.03" | Not Rated | Not Rated | 3/16" | 3/16" | 1/4" | 1/2" | Durometer 50A | Medium | -10° to 150° | 00000000 | 0000 |
3 | 10-32 | 8 | 0.05" | Not Rated | Not Rated | 3/8" | 3/8" | 1/2" | 1/2" | Durometer 50A | Medium | -10° to 150° | 00000000 | 0000 |