Sponge sealant strip is made of PU sponge strip backing glue. It is mainly used for mechanical seal, dust proof and sound insulation.
Bubble cotton: elastic, divided into openings (coarse, rough surface, low hardness, generally within 10 degrees Shaw hardness); closed (pore density, good elasticity, smooth surface; hardness from 15 to 70 degrees, the greater the hardness coefficient, the harder the material, the smaller the hardness, the better the elasticity).
The commonly used foaming cotton is Eva (rubber-plastic foaming, temperature resistance is about 80 degrees). Complete color, hardness of a variety of, respectively, 25 degrees of high elasticity, 38 degrees, 45 degrees, 60 degrees, 70 degrees. Smooth and delicate feel, can customize fire retardant and anti-static functions) and EPDM (ethylene propylene terpolymer foam, divided into open and closed. Opening hardness from 0 degrees to 10 degrees, rough surface; Closed-cell hardness from 10 degrees to 40 degrees, soft feel, good elasticity, smooth surface but high friction coefficient, temperature resistance in about 150 degrees)
Sponge: Soft and thick. The denser the hole is, the better the elasticity. The commonly used colors are grey, black and white, which are divided into two kinds of sponges: fire-proof and non-fire-proof. The length of sponge will not exceed 2 meters, especially blackened blasting cotton, because sponge foaming is a sponge brick, only 2 meters in length, it is not easy to splice.
