Edwards Nitrile Centring Ring Stainless Steel DN 25 ISO-KF NW25 Lot of 2 Seals

Edwards DN 25 ISO-KF Centering Ring (C10514396) – Stainless Steel with Nitrile O-Ring, Lot of 2

The Edwards C10514396 is a high-durability vacuum sealing component designed for NW25 (KF25) flange connections. Unlike standard aluminum variants, this model features a stainless steel centering ring, providing enhanced mechanical strength and resistance to corrosive environments. Paired with a Nitrile (Buna-N) O-ring, this lot of two seals is engineered to provide a robust, leak-tight interface in primary vacuum lines, backing lines, and general-purpose laboratory vacuum manifolds.

Technical Performance & Design

• 304 Grade Stainless Steel: The carrier ring is fabricated from 304 stainless steel, offering superior protection against pitting and chemical attack compared to aluminum counterparts.
• Nitrile (Buna-N) Sealing: The integrated O-ring is optimized for general vacuum service, providing excellent compression set resistance and compatibility with common vacuum oils.
• ISO-KF Interoperability: Fully compliant with ISO 2861/1 international standards, ensuring a precise fit with all DN 25 sized ISO-KF flanges and clamps.
• Outer-Ring Alignment: The precision-ground ring maintains concentric alignment under vacuum pressure, protecting the elastomer from extrusion and ensuring a metal-to-metal stop.

Product Specifications

• Part Number: C10514396
• Flange Size: DN 25 ISO-KF (NW25 / KF25)
• Ring Material: 304 Stainless Steel
• Seal Material: Nitrile (Buna-N)
• Quantity: Lot of 2 Seals
• Vacuum Rating: High Vacuum down to 10^-7 mbar

Key Benefits & Applications

• Enhanced Chemical Compatibility: The stainless steel construction makes these seals ideal for wet chemistry and gas-handling systems where aluminum would be susceptible to degradation.
• Reliable Roughing Lines: Standard hardware for rotary vane and dry scroll pump connections, ensuring airtight performance in primary vacuum stages.
• Rapid Maintenance: The KF (Kleinflansch) shorthand design allows for instantaneous tool-free seal replacement when used with standard wing-nut clamps.
• Industrial Durability: Perfect for pilot plant and scale-up bioprocessing facilities where vacuum components must withstand frequent cleaning and harsh sterilization protocols.

Edwards® and the Edwards logo are trademarks of Edwards Limited. ISO-KF, NW, and KF refer to international vacuum standards (ISO 2861 / DIN 28403).