Excellent for weather stripping, bumpers, sound isolation and dust seals. All weatherstripping is made of EPDM (Ethylene/Propylene closed cell sponge rubber). All are 45-50 durometer shore 00. All include a rubber based pressure sensitive adhesive except garage door seals. Garage door seals are mounted mechanically and are appropriate for use all around the top and sides of doors as well as the bottom. Temperature range -20° to 350° F. Due to custom cutting, no returns can be made.