ISO-KF Vacuum Flange Overpressure Rings

These overpressure rings can be added to standard centering rings to allow for 5-100 psig operation.

Compare	Description	Compatibility	rankScore	Flange Size	Outer Diameter	Inner Diameter	Width	Availability	Price
100316301 Overpressure Ring, NW16 ISO-KF Flange, 100 psig, 304 Stainless Steel $10.36 Show	100316301 Overpressure Ring, NW16 ISO-KF Flange, 100 psig, 304 Stainless Steel	UNIVERSAL	1.0	NW16	1.25 in. (31 mm)	1.19 in. (30 mm)	0.35 in. (9 mm)	Show	$10.36
100316303 Overpressure Ring, NW25 ISO-KF Flange, 100 psig, 304 Stainless Steel $11.03 Show	100316303 Overpressure Ring, NW25 ISO-KF Flange, 100 psig, 304 Stainless Steel	UNIVERSAL	1.0	NW25	1.66 in. (42 mm)	1.58 in. (40 mm)	0.35 in. (9 mm)	Show	$11.03
100316305 Overpressure Ring, NW40 ISO-KF Flange, 75 psig, 304 Stainless Steel $12.35 Show	100316305 Overpressure Ring, NW40 ISO-KF Flange, 75 psig, 304 Stainless Steel	UNIVERSAL	1.0	NW40	2.25 in. (57 mm)	2.17 in. (55 mm)	0.35 in. (9 mm)	Show	$12.35
100316306 Overpressure Ring, NW50 ISO-KF Flange, 80 psig, 304 Stainless Steel $13.45 Show	100316306 Overpressure Ring, NW50 ISO-KF Flange, 80 psig, 304 Stainless Steel	UNIVERSAL	1.0	NW50	2.75 in. (70 mm)	2.66 in. (68 mm)	0.14 in. (4 mm)	Show	$13.45