Description

Groco BB Backing Block For Flanged Seacock
Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull.

• Each size fits multiple seacock sizes


• Press threaded inserts into the hull side of the backing block into the holes that match the seacock flange


• 1/2″ thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvature


• Will not swell or absorb moisture

Size : 5.38″ Dia.
Fits : 1-1/4″ & 1-1/2″ Seacocks
Bolt : 5/16″ – 18″
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