FilterSeal by Apple Rubber Products Inc, Lancaster, NY, is a combination of elastomer and fabric or nylon mesh that works as a seal and filter. The filter is an integral part of the seal so it won’t slip out of place or cause seal failure. Seal materials include silicones and fluoroelastomers. Filter materials include PTFE (polytetrafluoroethylene) membrane, nylon, and polyester fiber. The elastomer and filter material combinations result in components more flexible than rigid plastic seals, which are susceptible to breakage during assembly. The single seal-filter part also helps reduce assembly time and part costs.