When aggressive chemicals, ultra-high temperatures, or ultra-high purity environments threaten standard elastomers, FFKM O-rings and seals deliver unparalleled performance. As a leading manufacturer of high-integrity sealing solutions, we specialize in perfluoroelastomer (FFKM) components engineered to withstand conditions where FKM and PTFE reach their limits. FFKM’s near-universal chemical compatibility resists acids, bases, solvents, amines, and sour gases (H₂S/CO₂) that rapidly degrade lesser materials—making it essential for refineries, chemical processing, and critical sealing applications.

In semiconductor manufacturing and pharmaceutical cleanrooms, FFKM seals offer ultra-low particle generation and minimal outgassing. This maintains vacuum integrity and prevents contamination in etch, CVD, and plasma processes.

FFKM for chemical applications can withstand up to 1600 types of chemicals, including acids, alkalis, organic solvents, aromatics, corrosive gases, amines, esters, oils.

JST can make seals of customized shapes through high-precision mold production.

This is sealing product developed by JST to meet the increasingly demanding sealing needs of equipment manufacturers and users in semiconductor, petrochemical, mechanical seal, instrumentation, energy, biopharmaceutical, food and medical industries. In addition to chemical inertness and thermal stability, FFKM also has the unique elasticity and durable sealing force of synthetic rubber. FFKM has excellent chemical corrosion resistance and high temperature resistance characteristics, which makes FFKM widely used in various harsh working conditions for chemical applications.