Click to enlargeNW40 Unbored Stub
304 Stainless

NW40 Unbored Stub (Blank) Flange
304 Stainless Steel

• A: 1.50"
• B: 1.00"
Vacuum Essential, Includes Ring & Clamp

NW40 (KF40) Flange OD: Ø2.18"
• NW40 Centering Ring Counter Bore: 1.62"

NW40 High Vacuum Flange Equivalents
KF40, KF-40, K150, NW-40, QF40, ISO-QF
NW40-150-US NW40-150-US-VE

NW40 Unbored Stub Stainless


Click to enlarge
Click to enlarge
All NW40 Hardware

NW40 Blanks

***This Vacuum Essential Includes***
• NW40 Unbored Stub, Stainless: NW40-150-US
1-Aluminum Wing Clamp (NW40-150-CW)
1-Stainless/Viton Centering Ring (NW40-150-SR-V)

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.
Viton® is a registered trademark of DuPont Dow Elastomers