Click to enlargeNW25 Replacement Buna O-Ring
A: 0.21"
B: 1.10"

NW25 (KF25) Replacement Buna O'Ring
Fits NW25 Standard & Adaptive Centering Rings
Pack of 10 NW25-100-OB Buna-N O-Rings

Buna-N O-Ring:
• 100°C Maximum
Also Known As Nitrile (NBR)
• NW25 (KF25) Replacement Elastomer Seals

NW25 High Vacuum Flange Equivalents
KF25, KF-25, K100, NW-25, QF25, ISO-QF

NW25 Buna-N O-Rings

NW25-100-OB10Price: $33.20Sale: $9.00

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Click to enlarge
NW25 O-Rings (All)

NW25 Centering Rings

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Click to enlarge
NW25 to NW20
Adaptive Centering Rings

All NW25 Hardware

**NW25 Flange Accessories Available Below**
NW25 Centering Rings
NW20 to NW25 Adaptive Centering Ring

NW25 Clamps, All Types
NW25 Plastic Caps

Buna-N O-Ring:
100°C Maximum

• Buna-N is low cost, but their maximum operating temperature of 100°C makes them unacceptable for many high temperature vacuum applications.

Contact LDS Vacuum with any questions:
Phone (407)862-4643 via Fax (407)862-8723 or

LDS Vacuum Products is a 100% woman owned company and
certified Woman Owned Small Business (WOSB)
The logos and/or trademarks appearing on this page are not owned by or registered to LDS but, rather, designate products sold by LDS, and are owned and/or registered to the manufacturers or suppliers of the products.