Compare Model Drawings, CAD & Specs Flange Size Inner Diameter Thickness Availability Price
Viton O-Ring, NW63 Size ISO-MF Vacuum Flange, 2-336 O-Ring Size
$12
NW63 2.85 in. (72 mm) 0.21 in. (5 mm)
Viton O-Ring, NW80 Size ISO-MF Vacuum Flange, 2-340 O-Ring Size
$14.90
NW80 3.35 in. (85 mm) 0.21 in. (5 mm)
Viton O-Ring, NW100 Size ISO-MF Vacuum Flange, 2-346 O-Ring Size
$26
NW100 4.10 in. (104 mm) 0.21 in. (5 mm)
Viton O-Ring, NW160 Size ISO-MF Vacuum Flange, 2-361 O-Ring Size
$33
NW160 5.98 in. (152 mm) 0.21 in. (5 mm)
Viton O-Ring, NW200 Size ISO-MF Vacuum Flange, 2-371 O-Ring Size
$35
NW200 8.48 in. (215 mm) 0.21 in. (5 mm)
Viton O-Ring, NW250 Size ISO-MF Vacuum Flange, 2-378 O-Ring Size
$41
NW250 10.48 in. (266 mm) 0.21 in. (5 mm)
Viton O-Ring, NW320 Size ISO-MF Vacuum Flange, 2-454 O-Ring Size
$48
NW320 12.48 in. (317 mm) 0.28 in. (7 mm)
Viton O-Ring, NW400 Size ISO-MF Vacuum Flange, 2-460 O-Ring Size
$54
NW400 15.48 in. (393 mm) 0.28 in. (7 mm)
Viton O-Ring, NW500 Size ISO-MF Vacuum Flange, 2-468 O-Ring Size
$71
NW500 19.46 in. (494 mm) 0.28 in. (7 mm)
Viton O-Ring, NW630 Size ISO-BF Vacuum Flange, 2-474 O-Ring Size
$108
NW630 24.94 in. (634 mm) 0.28 in. (7 mm)

Specifications

  • Component Type
    O-Ring
  • Series
    Series 76
  • Flange Type
    ISO-MF: (NW63 to NW500)
    ISO-BF: NW630
  • Seal Material
    Viton

Features

Elastomer Seal Comparison

Buna-N Viton
Compound N674-70 V747-75
Color Black Black
Bakeout 80°C 150°C
Benefits Seals easier, lower cost High temperature, lasts longer

Viton® is recommended where temperatures, chemical resistance or long installed life make it beneficial. Use Buna-N where temperatures are moderate, and installed useful life is consistent with this material. The centering ring is available in stainless steel or aluminum. Use stainless steel where chemical resistance is needed. Flanges and seals are designed to be tightened to metal to metal contact.

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