Any synthetic or natural material with resilience or memory sufficient to return to its original shape after major or minor distortion. Chemically inert, finely divided material added to the Elastomer to aid in the processing and improvement of physical properties. Excess rubber left around a rubber part after molding due to space between mating mold surfaces. A device used to retain fluids under pressure or seal out foreign matter. Normally refers to a static seal.
Higher numbers indicate harder material.
Liquid Silicone Rubber, the silicone rubber utilized in the LIM process. Unsymmetrical seal caused by dissimilar cavities in mating mold sections. The uninterrupted surface produced by intimate contact of rubber with the surface of the mold at vulcanization. A chemical compound that can undergo polymerization. The most commonly used Elastomer for products because of its resistance to petroleum fluids, good physical properties and useful temperature range.