SEACOCK BACKING BLOCKS (GROCO)The SEACOCK BACKING BLOCKS (GROCO) are essential for secure installation of 2" and 2-1/2" seacocks. These backing blocks are designed to fit multiple seacock sizes, providing versatility and convenience for marine applications.Features: 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 or absorb moisture Made from an environmentally friendly PVC foam specially formulated for marine applications Specifications: Material: PVC foam Thickness: 1/2" Learn More:For more information about seacocks, you can visit the following Wikipedia page:Seacock - Wikipedia
