ISO Flange Centering Ring Buna-N O-Rings

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Overview

These Buna-N O-rings can be used as spares or to replace the O-rings on our ISO centering ring seal assemblies. Buna-N (N674-70 compound) is black colored elastomer with a bakeout rating of 80°C and is less expensive and seals easier than lasts longer than Buna-N.

Replacement Buna-N O-rings for ISO centering rings
80 °C maximum temperature
Keep as spares for increased up-time

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Products

Compare	Description	Compatibility	rankScore	Flange Size	Inner Diameter	Thickness	Availability	Price
100761906 Buna-N O-Ring, NW63 Size ISO-MF Vacuum Flange, 2-336 O-Ring Size $1.88 Show	100761906 Buna-N O-Ring, NW63 Size ISO-MF Vacuum Flange, 2-336 O-Ring Size	UNIVERSAL	1.0	NW63	2.85 in. (72 mm)	0.21 in. (5 mm)	Show	$1.88
100761908 Buna-N O-Ring, NW80 Size ISO-MF Vacuum Flange, 2-340 O-Ring Size $2.98 Show	100761908 Buna-N O-Ring, NW80 Size ISO-MF Vacuum Flange, 2-340 O-Ring Size	UNIVERSAL	1.0	NW80	3.35 in. (85 mm)	0.21 in. (5 mm)	Show	$2.98
100761910 Buna-N O-Ring, NW100 Size ISO-MF Vacuum Flange, 2-346 O-Ring Size $3.19 Show	100761910 Buna-N O-Ring, NW100 Size ISO-MF Vacuum Flange, 2-346 O-Ring Size	UNIVERSAL	1.0	NW100	4.10 in. (104 mm)	0.21 in. (5 mm)	Show	$3.19
100761916 Buna-N O-Ring, NW160 Size ISO-MF Vacuum Flange, 2-361 O-Ring Size $3.75 Show	100761916 Buna-N O-Ring, NW160 Size ISO-MF Vacuum Flange, 2-361 O-Ring Size	UNIVERSAL	1.0	NW160	5.98 in. (152 mm)	0.21 in. (5 mm)	Show	$3.75
100761920 Buna-N O-Ring, NW200 Size ISO-MF Vacuum Flange, 2-371 O-Ring Size $6.84 Show	100761920 Buna-N O-Ring, NW200 Size ISO-MF Vacuum Flange, 2-371 O-Ring Size	UNIVERSAL	1.0	NW200	8.48 in. (215 mm)	0.21 in. (5 mm)	Show	$6.84
100761925 Buna-N O-Ring, NW250 Size ISO-MF Vacuum Flange, 2-378 O-Ring Size $8.38 Show	100761925 Buna-N O-Ring, NW250 Size ISO-MF Vacuum Flange, 2-378 O-Ring Size	UNIVERSAL	1.0	NW250	10.48 in. (266 mm)	0.21 in. (5 mm)	Show	$8.38
100761932 Buna-N O-Ring, NW320 Size ISO-MF Vacuum Flange, 2-454 O-Ring Size $28 Show	100761932 Buna-N O-Ring, NW320 Size ISO-MF Vacuum Flange, 2-454 O-Ring Size	UNIVERSAL	1.0	NW320	12.48 in. (317 mm)	0.28 in. (7 mm)	Show	$28
100761940 Buna-N O-Ring, NW400 Size ISO-MF Vacuum Flange, 2-460 O-Ring Size $26 Show	100761940 Buna-N O-Ring, NW400 Size ISO-MF Vacuum Flange, 2-460 O-Ring Size	UNIVERSAL	1.0	NW400	15.48 in. (393 mm)	0.28 in. (7 mm)	Show	$26
100761950 Buna-N O-Ring, NW500 Size ISO-MF Vacuum Flange, 2-468 O-Ring Size $63 Show	100761950 Buna-N O-Ring, NW500 Size ISO-MF Vacuum Flange, 2-468 O-Ring Size	UNIVERSAL	1.0	NW500	19.46 in. (494 mm)	0.28 in. (7 mm)	Show	$63
100761963 Buna-N O-Ring, NW630 Size ISO-BF Vacuum Flange, 2-474 O-Ring Size $58 Show	100761963 Buna-N O-Ring, NW630 Size ISO-BF Vacuum Flange, 2-474 O-Ring Size	UNIVERSAL	1.0	NW630	24.94 in. (634 mm)	0.28 in. (7 mm)	Show	$58