KF-25 to KF-16 Straight Reducer | LoCo Science Flange Size_ 4" and features a 1/4" FNPT

and features a 1/4" FNPT thread fitting on all three sides

the KF-16 and KF-25 flanges are designed for easy and convenient assembly in your vacuum system

leak-free seal

Used with an aluminum or stainless steel circumferential clamp or rubber elastomer centering ring for a tight seal with KF-40 flanges and fittings

KF-25 to KF-16 Straight Reducer | LoCo Science Flange Size_ 4" and features a 1/4" FNPTThe KF 16 to KF 25 Reducer Adapter is used to connect different flange sizes that meet ISO KF standards. Genderless mating allows for fast, convenient connections between zero length and non zero length flanges. The adapter works with NW KF 16 to NW KF 25 circumferential clamps and centering rings to create a strong seal that prevents leaks during use. Designed for a high vacuum environment, the reducer is made from a heat and corrosion resistant