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Ace Glass, 12198-44, Nw40 Aluminum Clamp for Use with 12198-40 Centering Ring
Connections for NW metal flanges to like NW metal flanges such as connection from 14113 product family of CRVpro vacuum pumps to 12694 product family of flexible stainless steel tubing. CRVpro vacuum pumps include a Viton® o-ring centering ring, however your may wish to substitute silicone o-ring variant.
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