Click to enlarge

NW25 Centering Ring
304 Stainless/Buna O-Ring
A: 0.98"
B: 0.21"

• Buna (Buna-N, Nitrile, NBR) O-Ring
• 100°C Maximum
• NW25 (KF25) High Vacuum Hardware

NW25 (KF25) Stainless Centering Ring with Buna (Nitrile NBR) O-Ring

Fits: NW25 (KF25) Flange

Buna Replacement O'Ring
• 100°C Maximum
• Buna-N (Nitrile, NBR)

Fits NW25 Flange Series Equivalents:
KF25, KF-25, K100, NW-25, QF25, ISO-QF
NW25-100-SR-B Compare to: QF25-100-SRB QF25-100-SR-B 7 10005 KC25SB NW-25-CR-SB P101961 100312803 4000011 QF25-100-CTR-BN

NW25 Centering Ring (NW25-100-SR-B)
NW25-100-SR-BPrice: $10.11Sale: $5.00

Click to enlarge
Click to enlarge
NW25 Clamps, All Types

NW25 Ring and Clamp Assembly

Click to enlarge
Click to enlarge
NW25 O-Rings (All)

Centering Rings WITHOUT O-Ring

Click to enlarge
Click to enlarge
NW25 Mesh Screen Rings

NW Overpressure Ring

Click to enlarge
All NW25 Hardware

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.
Images Shown May Be For Reference Only

There is a global helium shortage. Each time an MRI is performed, helium is used. Please rethink your helium balloon purchase.