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
7 Weeks
NW100 4.10 in. (104 mm) 0.21 in. (5 mm)
7 Weeks
Viton O-Ring, NW160 Size ISO-MF Vacuum Flange, 2-361 O-Ring Size
$33
7 Weeks
NW160 5.98 in. (152 mm) 0.21 in. (5 mm)
7 Weeks
Viton O-Ring, NW200 Size ISO-MF Vacuum Flange, 2-371 O-Ring Size
$35
7 Weeks
NW200 8.48 in. (215 mm) 0.21 in. (5 mm)
7 Weeks
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
1 Week
NW320 12.48 in. (317 mm) 0.28 in. (7 mm)
1 Week
Viton O-Ring, NW400 Size ISO-MF Vacuum Flange, 2-460 O-Ring Size
$54
7 Weeks
NW400 15.48 in. (393 mm) 0.28 in. (7 mm)
7 Weeks
Viton O-Ring, NW500 Size ISO-MF Vacuum Flange, 2-468 O-Ring Size
$71
7 Weeks
NW500 19.46 in. (494 mm) 0.28 in. (7 mm)
7 Weeks
Viton O-Ring, NW630 Size ISO-BF Vacuum Flange, 2-474 O-Ring Size
$108
7 Weeks
NW630 24.94 in. (634 mm) 0.28 in. (7 mm)
7 Weeks

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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