GROCO Block f/3/4" & 1" Seacocks Backing

GROCO Block f/3/4" & 1" Seacocks Backing. Backing Block for 3/4" & 1" Seacocks Specifications for GROCO Backing Block f/3/4" & 1" Seacocks: Manufacturer: GROCO Color: Black Features of GROCO Backing Block f/3/4" & 1" Seacocks Each size fits multiple seacock sizes Press threaded brass inserts into the hull side of the backing block into the holes that match the seacock flange Rigid 1/2" thickness provides secure installation but is flexible enough to conform to minor hull curvature Will not swell