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  • GROCO Backing Block f/2" 2-1/2" Seacocks [BB-3]

    Backing Block for 2" & 2-1/2" 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 7"L WT: 0.45 lbs
    • UPC: 742985170155