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Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull.

SEACOCK BACKING BLOCKS (GROCO)

SKU: 7.42985E+11
$54.00Price
    • Each size fits multiple seacock sizes.

    • Press threaded inserts into the hull side of the backing block into the holes that match the seacock flange.

    • 1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvature.

    • Will not swell or absorb moisture.
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