Compare Model Drawings, CAD & Specs Availability Price
Buna-N O-Ring, NW63 Size ISO-MF Vacuum Flange, 2-336 O-Ring Size
$1.70
7 Weeks
7 Weeks
Buna-N O-Ring, NW80 Size ISO-MF Vacuum Flange, 2-340 O-Ring Size
$2.70
7 Weeks
7 Weeks
Buna-N O-Ring, NW100 Size ISO-MF Vacuum Flange, 2-346 O-Ring Size
$2.70
7 Weeks
7 Weeks
Buna-N O-Ring, NW160 Size ISO-MF Vacuum Flange, 2-361 O-Ring Size
$3.40
7 Weeks
7 Weeks
Buna-N O-Ring, NW200 Size ISO-MF Vacuum Flange, 2-371 O-Ring Size
$6.20
Buna-N O-Ring, NW250 Size ISO-MF Vacuum Flange, 2-378 O-Ring Size
$7.60
7 Weeks
7 Weeks
Buna-N O-Ring, NW320 Size ISO-MF Vacuum Flange, 2-454 O-Ring Size
$26
Buna-N O-Ring, NW400 Size ISO-MF Vacuum Flange, 2-460 O-Ring Size
$22.80
7 Weeks
7 Weeks
Buna-N O-Ring, NW500 Size ISO-MF Vacuum Flange, 2-468 O-Ring Size
$30
7 Weeks
7 Weeks
Buna-N O-Ring, NW630 Size ISO-BF Vacuum Flange, 2-474 O-Ring Size
$41
7 Weeks
7 Weeks

Please see o-ring schematic for dimension callouts.

Specifications

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

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.

Need help?

Contact an Applications Specialist by sending us an email