Kurt J. Lesker Parts
The Kurt J. Lesker Company was founded in 1954 and makes and supplies vacuum hardware, components and deposition systems for research and industry.
The Lesker parts here are KF (ISO-KF) vacuum fittings in KF25, KF40 and KF50 sizes: stainless adapters from a KF flange to male or female NPT pipe thread, buttweld half nipples, centering rings including screened rings, and die-cast aluminum hinged clamps.
How to spot one: Lesker catalog numbers use QF for KF parts, so QF40 is a KF40 part. On a centering ring, SRB carries a Buna-N O-ring and SRV a fluorocarbon (Viton) O-ring; pick fluorocarbon for heat or bakeout. Match the flange size: a KF25 flange takes a KF25 centering ring and clamp.
Browse Hydraulics / Pneumatics. See also MKS Instruments, Edwards Vacuum and Swagelok.
Ships same or next business day from our Idaho warehouse. Online since 1999.
