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A&N CORPORATION
ASA Flange System
High Vacuum Components Since 1965
ASA/ANSI Standard Sealing Assemblies
A sealing pair of ASA/ANSI flanges contains 1 flange with a smooth face and 1 flange with an o-ring groove machined into the surface. A Viton® sealing o-ring is placed into the groove of one of the two flanges. the flanges compress the o-ring as the fastening bolts are tightened. the o-ring cold flows under this pressure and fills microscopic surface imperfections on the sealing flange face creating a vacuum tight seal capable of withstanding temperature extremes from -20°C up to 200°C and pressures as low as 1X10-8 Torr.
| Viton® O-ring
idaptiveFasteners^^^^^Ê^^^Kj^^^ÊÊ
The adaptive bolt hole bushing reduces a 3/4" bolt hole down to a 3/8" bolt hole. This is commonly used to connect an ASA/ANSI flange (sizes 200, 300 or 400) to a gate valve with a matching flange. The ASA/ANSI flange on the gate valve will have tapped bolt holes and require non-standard bolts available on request.
1.00 dia
K-»H
|.735 dia| -Bushing-
Adaptive Sealing Gaskets
In the event that two smooth faced or grooved flanges come together in your system an adaptive gasket can save the day. A&N can provide either a thin smooth sealing face gasket or a thin gasket with O-Rings on both sides. Both gaskets are thin enough to allow the use of standard bolts to compress the assembly. These problems are not common and therefore A&N does not stock these components. Please call for price and delivery.
Ail ® Registered Trademarks are the property of their respective companies, see Intro. pg. 7. (352) 528-4100 • 1(800) FLANGE1 • www.ancorp.com
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