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alkalies and hydrocarbons
Relax and enjoy the weekend on the water
Thickness 1/16" (1
29 mm Double Block — Swivel
Groco Backing Block Fits Seacock 750 & 1000 Propane System alkalies and hydrocarbonsBB SERIES BACKING BLOCKS Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull. 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. Rigid 1 2" thickness provides secure installation but is flexible enough to conform to minor hull curvature. Will not swell or absorb moisture.
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