Click to enlargeNW40 (KF40) Long Butt Flange
Tube Size: 1.50"
*Vacuum Essential*

NW40 Long Butt Flange (Half Nipple)
NW40 (KF40) Flange OD: 2.18"
Tube Size: 1.50"
Vacuum Essential

• A: 1.50"
• B: 0.07"
• C: 1.58"

NW40 (KF40) Flange OD: Ø2.18"
• NW40 Tube OD: 1-1/2"
• NW40 Centering Ring Counter Bore: 1.62"

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

NW40 Long Butt Flange Aluminum


Click to enlarge
Click to enlarge
All NW40 Hardware

NW40 Series Long Butt Flanges (All)

***This Vacuum Essential Includes***
• NW40 Aluminum Long Butt Flange
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
Images Shown May Be For Reference Only