GROCO Backing Block for 2" & 2-1/2" Seacocks, 1/2" Thick – Made in USA

Ensure a robust and secure foundation for your marine seacocks with the GROCO Backing Block. Engineered to enhance the installation of flanged seacocks, this backing block eliminates the guesswork of homemade solutions, providing a simple, safe, and hassle-free mounting experience. Proudly made in the USA from environmentally friendly PVC foam, it's designed to withstand harsh marine environments. Upgrade your marine plumbing system today for unmatched reliability.

Key Benefits & Specifications:

• Precision Fit: Specifically designed to accommodate 2" and 2-1/2" seacocks, ensuring perfect alignment.
• Secure Mounting: Features press-threaded 3/8"-16 brass inserts that integrate seamlessly with your hull, creating a stronger, more reliable connection.
• Optimal Thickness: Its 1/2" rigid profile offers superior support while remaining flexible enough to conform to minor hull curvature for a flush seal.
• Moisture & Swelling Resistant: Constructed from a specially formulated marine-grade PVC foam that will not swell or absorb moisture, ensuring long-term durability.
• Eco-Conscious Construction: Made from environmentally friendly PVC foam, aligning with sustainable marine practices.
• Generous Diameter: Measures 7.13 inches in diameter, providing ample surface area for stable installation.

Recommended Pairings: For complete and reliable installation, pair with GROCO Bronze Thru-Hull Fittings and appropriate stainless steel bolts (sold separately).