GROCO Backing Block f/3/4"  1" Seacocks [BB-1]

GROCO Backing Block f/3/4" 1" Seacocks [BB-1]

  • $39.95
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Backing Block for 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 or absorb moisture
  • Made from an environmentally friendly PVC foam specially formulated for marine applications


  • Construction: Bronze
  • Box Dimensions: 1"H x 7"W x 9"L WT: 0.2 lbs
  • UPC: 742985169845