CF25 Flat Ring Copper Gasket Crush Washer Sealing Fastener 20Pcs

Product features
· A Copper Gasket is used to mate two Conflat (CF) vacuum flanges together. These conflat copper conflat gaskets fit a conflat flange size of 2-1/8 inches.
· The gasket material sealing two flanges determines the joint’s maximum temperature and, to an extent, the base pressure of the vacuum volume.
· Metal gaskets are impermeable to gases and withstand moderately high temperatures indefinitely. The normal gaskets for stainless steel CF flnges are punched from 1/4 hard, high purity, oxygen-free (OFHC) copper stock.
· The gaskets are then chemically cleaned and processed to minimize scratches and burrs. ConFlat (CF) flanges are used for ultra-high vacuum applications.
These fittings use a copper gasket and knife-edge flanges to achieve the high vacuum seal and can operate down to 10-13 torr (10-11 Pa) and can be heated to 450 °C for bake-out.

Specifications
CF Flange Gaskets:
Copper — The normal gaskets for stainless steel CF flanges are punched from 1/4 hard, high purity, oxygen-free (OFHC) copper stock.
The gaskets are then chemically cleaned and processed to minimize scratches and burrs.
Pressure range: 1 10-13 hPa to ambient pressure
Temperature range: -196 to 200 °C
For single use only
CF Flange Size: CF 2-1/8 inch, 2.125in
Common Dimensions: Flange Outer Diameter (OD) 2-1/8″, Gasket Outer Diameter (OD) 1.25″, Gasket Inner Diameter (ID) 1″
Package Contains:
1 X CF Flange (Conflat) Copper Gaskets