These KF Centering Ring vacuum fittings follow KF standards and have flange sizes from KF10 to KF50. They are commonly used to build foreline vacuum plumbing and process systems. They are often called quick flange fittings because they are quick to assemble. A circumferential clamp and centering ring form the vacuum seal between the connecting flanges. The centering ring contains a rubber elastomer o-ring. The standard sizes for quick flange fittings are KF-10, KF-16, KF-25, KF-40, and KF-50 with flange sizes NW-10, NW-16, NW-25, NW-40, and NW-50, respectively. They are made of corrosive-resistant Stainless Steel with Viton® O-Ring. Viton® is well known for its excellent resistance to heat (400°F/200°C) and to aggressive fuels and chemicals. \n

Part No.	Size	A	B	C	D	C/R	O-Ring
EV01034	KF10	10	12	8	3.9	304 S.S.	Viton
EV01035	KF16	16	17	8	3.9	304 S.S.	Viton
EV01036	KF25	25	26	8	3.9	304 S.S.	Viton
EV01037	KF40	40	41	8	3.9	304 S.S.	Viton
EV01038	KF50	50	52	8	3.9	304 S.S.	Viton