Click to enlargeNW40 Centering Ring Without O-Ring

NW40 Centering Ring
NO O-Ring
6061 T6 Aluminum
NW40 (KF40) High Vacuum Hardware

• A: 1.57"
• B: 1.61"
• C: 0.32"
• D: 0.15"

Fits NW40 Flange Series Equivalents:
KF40, KF-40, NW-40 & QF40

NW40 Centering Ring Without O-Ring


Click to enlarge
Click to enlarge
All NW40 Hardware

NW40 O-Rings (All)

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