Hammer Seal unions have been utilized for years in oilfield piping systems. Mud fluid drilling systems that connect the steel tanks to the pumps need to have a leak proof and quickly detachable connection with a large diameter pipe size. American Block carries hammer seal unions from diameter sizes 6″ – 12″. The solid 0-ring locks down on the O.D. of the pipe as the hammer nut is tightened. All of the hammer seal unions are rated for 500 PSI. You can achieve a misaligned sealed connection with American Block Hammer Seal Unions.
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