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

$43.07

BB-1

2 in stock (can be backordered)

Description

Backing Block for 3/4″ & 1″ 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