Decoupling Washers


Boom Mat™ Decoupling Washers are the best way to decouple bodies, gas tanks, fenders and more from engine and road vibrations. They are made from viscoelastic elastomers designed to act as a barrier between metals and dissipate vibrational energy, resonance and impact. These washers dampen vibrations over a wide range of frequencies and temperatures. Simply add washer between the metal surfaces. Multiple sizes available for any type of installation. Perfect for mounting fuel tanks on motorcycles, body mounts, fender mounts and more. Place between metal mounting surfaces to reduce vibration transfer.

Assorted Washer Kit (050087) Includes:

  • Eight ⅜" small washers (10.31mm ID x 20.63mm OD)
  • Eight ⅜" large washers (10.31mm ID x 31.75mm OD)
  • Eight ½" small washers (13.48mm ID x 26.98mm OD)
  • Four ½" large washers (13.48mm ID x 63.50mm OD)
  • Eight 9/16" washers (15.24mm ID x 29.51mm OD)

Material Type: Polyurethane Elastomer
Color: Clear to slight yellow
Density: 69lb/ft3
Operating Temp: -20F to 200F
Specific Gravity: 1.10
Thickness: .050” +/- 10%
Hardness: 67A
Tensile: 2400
Elongation: 425%


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Sell Sheet:
Warning “WARNING: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. –

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