Backing Block for 2″ & 2-1/2″ Seacocks
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