FFKM Oil seals
FFKM Oil seals
FFKM oil seal uses Perfluoroelastomer as the main sealing material, which is currently the rubber sealing product with the best comprehensive performance. All hydrogen atoms in its molecular structure are replaced by fluorine atoms, and its chemical stability is close to that of PTFE (polytetrafluoroethylene). At the same time, it has the elasticity and resilience of rubber materials. Usually installed near the bearing, it seals in or out various liquids, gases or solids encountered by the specific mechanism as needed, and also prevents oil leakage at the end of the rotating shaft and the intrusion of external dust particles.
The FFKM oil seal is capable of operating under extreme high temperatures, high corrosive media, and high vacuum/high purity conditions, and can perform the physical properties of rubber even at high temperatures of about 300℃. Widely used in semiconductor, petrochemical, food & pharmaceutical, aerospace and other fields of key equipment.
Main characteristic
- Super chemical resistance: It can withstand almost all chemical media (acids, bases, ketones, esters, aldehydes, amines, strong oxidants, fuels, lubricants, etc.), comparable to PTFE.
- Excellent high temperature resistance: the service temperature range is -40°C ~ +325°C.
- Good low permeability: extremely low gas permeability, suitable for vacuum and high purity systems.
- Excellent resilience: rubber elasticity under high temperature and corrosion, small permanent deformation under compression.
- High cleanliness: less precipitation of metal ions, suitable for semiconductor and pharmaceutical industries.
Typical application
- Petrochemical industry: shaft seals for pumps, valves, and reactors under high temperature and strong corrosive media.
- Semiconductor: vacuum pumps and plasma etching equipment under corrosive gases (such as ClF₃, NF₃, O₃, HBr).
- Food & Pharmaceutical: strong disinfectant, reaction kettle under solvent cleaning, stirring shaft sealing.
- Aerospace：Oil seals and O-rings under high-temperature fuels, hydraulic media and oxidized propellants.