The cured gels can protect against environmental factors and shock. EPM-2480 and 2481 are based on dimethyl silicone systems; EPM-2480 is lower viscosity and firmer than EPM-2481. EPM-2482 is based on a diphenyl dimethyl silicone system, which provides temperature stability. NuSil Technology, Carpinteria, CA, www.nusil.com.