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

GROCO

$38.35 
SKU: BB-1-C-72847

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