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NW40 Centering Ring
A: 1.57"
B: 0.21"
Pack of 25!

• NW40 (KF40) Series
• Stainless Centering Ring
Buna-N O-Ring

NW40 Series Stainless Centering Ring
with Buna O-Ring

Buna Replacement O'Ring
• 100°C Maximum
• NW40 (KF40) High Vacuum Hardware

Fits NW40 Flange Series Equivalents:
KF40, KF-40, K150, NW-40, QF40, ISO-QF
NW40-150-SR-B NW40-150-SR-B-OS

NW40 Centering Ring (NW40-SRB-PK25)
NW40-SRB-PK25Price: $300.00Sale: $134.00

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All NW40 Hardware

NW40 Clamps, All Types

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NW40 Ring and Clamp Assembly

NW40 O-Ring Replacements

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Centering Rings WITHOUT O-Ring

NW40 Mesh Screened Centering Rings

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NW Overpressure Ring

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.

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