KF-50 Stainless Steel FNPT End Cap NPT Size:3/8" The premium extractor lid is

The premium extractor lid is pre-assembled and nitrogen tested for leaks to ensure the customer receives a leak and worry-free part to use on their extraction system

Resin traps come complete with glycerin-filled vacuum gauge

Apiezon H Grease is a silicone-free high vacuum grease perfectly suited for use at high temperatures in both scientific and industrial applications

chlorine free

all other polymer lids are made of acrylic

KF-50 Stainless Steel FNPT End Cap NPT Size:3/8" The premium extractor lid isKF 50 Stainless Steel FNPT End Cap This is a FNPT KF 50 (NW50) Endcap to adapt a KF50 fitting to Female NPT Threads for 1 4", 3 8", and 1 2" NPT.