Click to enlargeNW25 Replacement Silicone O-Ring
A: 0.21"
B: 1.10"

NW25 (KF25) Replacement Silicone O'Ring
Fits NW25 Standard & Adaptive Centering Rings

Silicone O-Ring:
• 200°C Maximum
• Used for Chemical Applications
• NW25 (KF25) Replacement Elastomer Seal

NW25 High Vacuum Flange Equivalents
KF25, KF-25, K100, NW-25, QF25, ISO-QF
NW25-100-OS Compare to: 200 degrees P103653 O-S320

NW25 Silicone O-Ring

NW25-100-OSPrice: $20.70Sale: $2.00

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Click to enlarge
NW25 O-Rings (All)

NW25 Centering Rings

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Click to enlarge
NW25 to NW20
Adaptive Centering Rings

All NW25 Hardware

**NW25 Flange Accessories Available Below**
NW25 Centering Rings
NW20 to NW25 Adaptive Centering Ring

NW25 Clamps, All Types
NW25 Plastic Caps

Silicone O-Ring:
200°C Maximum
Chemical Applications

Silicone is used in chemical applications and can withstand temperatures of 200°C for short periods, but silicone tends to harden to prolonged high temperature service, sticking to the metal surfaces and making the o-ring difficult to be replaced. Silicone is also very porous to helium.

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.