Click to enlargeNW25 (KF25) Long Butt Flange
Tube Size: 1.00"
*Vacuum Essential*

NW25 Aluminum Long Butt Flange (Half Nipple)
6061 T6 Aluminum
Tube Size: 1"
Vacuum Essential

• A: 1.00"
• B: 0.07"
• C: 1.58"

NW25 (KF25) Flange OD: Ø1.57"
• Tube OD: 1.00"
• NW25 Centering Ring Counter Bore: 1.03"

NW25 High Vacuum Flange Equivalents
KF25, KF-25, K100, NW-25, QF25, ISO-QF

NW25 Long Butt Flange Aluminum


Click to enlarge
Click to enlarge
NW25 Series Long Butt Flanges (All)

All NW25 Hardware

***This Vacuum Essential Includes***
• NW25 Aluminum Long Butt Flange
1-Aluminum Wing Clamp (NW25-100-CW)
1-Stainless/Viton Centering Ring (NW25-100-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