![GROCO Backing Block f\/3\/4" 1" Seacocks [BB-1]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/1280x1280/products/8327/9513/72847XL__76999.1638249590.jpg?c=1 "GROCO Backing Block f\/3\/4\" 1\" Seacocks [BB-1]")
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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
Specifications:
- Construction: Bronze
- Box Dimensions: 1"H x 7"W x 9"L WT: 0.2 lbs
- UPC: 742985169845
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![GROCO 1-1\/4" Safety Seacock w\/1" Side Port [SBV-1250-P]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/32811/43420/75371XL__49654.1670620600.jpg?c=1 "GROCO 1-1\/4\" Safety Seacock w\/1\" Side Port [SBV-1250-P]")
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![GROCO 1-1\/4" Bronze Tri-Flanged Ball Valve\/Seacock [FBV-1250]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/8900/10267/74387XL__16015.1638250631.jpg?c=1 "GROCO 1-1\/4\" Bronze Tri-Flanged Ball Valve\/Seacock [FBV-1250]")
![GROCO 1-1\/2" Safety Seacock w\/1-1\/4" Side Port [SBV-1500-P]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/32812/43421/75372XL__31939.1670620602.jpg?c=1 "GROCO 1-1\/2\" Safety Seacock w\/1-1\/4\" Side Port [SBV-1500-P]")
![GROCO 1-1\/4" Ball Valve\/Seacock Raw Water Strainer Combo [BVS-1250]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/8913/10280/74400XL__52416.1638250655.jpg?c=1 "GROCO 1-1\/4\" Ball Valve\/Seacock Raw Water Strainer Combo [BVS-1250]")
![GROCO 1-1\/2" Bronze Flanged Full Flow Seacock [BV-1500]](https://cdn11.bigcommerce.com/s-akrdq0rr06/images/stencil/500x659/products/8325/9511/72844XL__27685.1638249587.jpg?c=1 "GROCO 1-1\/2\" Bronze Flanged Full Flow Seacock [BV-1500]")