CTG Inc. manufactures PTFE and elastomeric spring energized seals and sealing systems. Spring Energized Seals can be used in static, reciprocating and slow to medium rotary applications. Unlike many other seals where you must size your seal application around standard size seals,the CTG Spring energized seal can be manufactured to your product. While standard size seals are something we make everyday, we make seals in any size needed. Used as piston, rod, or face seals, the CTG spring energized seal is engineered to meet your exact specifications and design intent.