Click to enlargeNW40 Mesh Screen Centering Ring
A: 1.41"
B: 0.21"

NW40 (KF40) Stainless Mesh Screen Centering Ring With Buna-N O'Ring

• NW40 (KF40, QF40) Series High Vacuum Hardware
• Centering Ring with Screen (304 Stainless)
72 Mesh Screen Centering Ring With ORing

NW40 (KF40, QF40) O'Ring
• Buna-N: 100°C Maximum

NW40 Series Equivalent Names:
• KF40, KF-40, NW-40, QF40, Kwik Flange

• Throughout 2023, a single item will be listed for 50% off for a single week.
• You must purchase that item during the sale week to take advantage of the price.
• Each week the item will change.
• Purchase as many as you wish, until we run out

NW40 Mesh Screen Ring Buna O-Ring

NW40-150-SRB-SMPrice: $59.2750 YEAR SALE: $15.50

Click to enlarge
Click to enlarge
All NW40 Hardware

NW40 Mesh Screen Rings

Click to enlarge
Click to enlarge
NW40 O-Rings (All)

NW40 Series Clamps

Click to enlarge
NW40 Centering Rings

LDS Will Be Closed For Our Annual Vacation Shutdown:
Friday, June 28 (5:00pm EST) and will reopen Monday, July 8th (7:00am)

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.
Images Shown May Be For Reference Only

LDS is a family owned company and many of our employees vacation together (we like each other). We thank you for your business and appreciate your understanding during this vacation schedule.