Spring Energized Seal

ESI's spring-energized seals are a high-performance type of lip seal, designed for conditions where conventional O-rings and rubber seals cannot withstand chemical exposure or temperature extremes. Each seal consists of a PTFE lip and an internal metal spring that work together to ensure reliable sealing. The PTFE lip provides low friction and excellent wear resistance, while the spring applies continuous pressure to the sealing surface, compensating for thermal expansion and material deformation to maintain a tight seal under fluctuating conditions.

Compared with mechanical seals, these spring-energized PTFE lip seals offer a simpler, more compact, and cost-effective solution for smaller or high-purity equipment. Without the need for complex rotating assemblies or lubrication, they reduce maintenance requirements while delivering clean, consistent performance in semiconductor, chemical, and vacuum systems.

Get in touch to discuss the ideal spring-energized seal configuration for your system or equipment.