The difference between foam rubber vs. sponge rubber begins with ingredients, continues through the material manufacturing process, and extends to molecular structure. Although the terms “foam rubber” and “sponge rubber” are sometimes used interchangeably, these elastomers have differences that may not be readily apparent. Moreover, sponge rubber and foam rubber are used in different types of sealing and insulation applications.
If you don’t understand how foam rubber vs. sponge rubber are made and used, you risk choosing a material that permits leaking, provides inadequate cushioning, or that won’t withstand the environment. The rubber may also shrivel up, become brittle, or lose compressibility. By choosing a compound based on MTAP, an abbreviation for material, temperature, application and pressure, engineers can meet requirements beyond whether just foam rubber vs. sponge rubber needs to be used.
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