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Seasonal Pick Groco Backing Block F/2" 2-1/2" Seacocks [bb-3] Save 95% Now [bcxDFOos]

$26.99 $86.99 -69%

GROCO Backing Block for Seacocks The GROCO Backing Block f/2" 2-1/2" Seacocks (BB-3) is a versatile and durable solution for your marine plumbing needs. Designed to fit both 2" and 2-1/2" seacocks, this backing block offers unparalleled flexibility a

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GROCO Backing Block for Seacocks

The GROCO Backing Block f/2" 2-1/2" Seacocks (BB-3) is a versatile and durable solution for your marine plumbing needs. Designed to fit both 2" and 2-1/2" seacocks, this backing block offers unparalleled flexibility and security. With its rigid 1/2" thickness, it provides a stable foundation for your seacock installation while still conforming to minor hull curvatures. This innovative backing block is the perfect choice for boaters who demand quality and reliability in their marine accessories.

Key Features and Specifications

Crafted from high-quality bronze, the GROCO Backing Block ensures long-lasting performance and durability. Its unique design allows for easy installation by simply pressing threaded brass inserts into the hull side of the backing block, matching the seacock flange. The backing block is made from an environmentally friendly PVC foam, specially formulated for marine applications, ensuring it will not swell or absorb moisture. With box dimensions of 1"H x 7"W x 7"L and a weight of 0.45 lbs, this backing block is lightweight yet robust. Its UPC code is 742985170155, making it easy to identify and order.

Practical Uses and Benefits

The GROCO Backing Block is an essential component for any boater looking to maintain the integrity of their marine plumbing system. Whether you're a weekend sailor or a seasoned captain, this backing block offers numerous benefits. Its ability to fit multiple seacock sizes ensures compatibility with a wide range of vessels. By providing a secure installation and conforming to minor hull curvatures, it helps prevent leaks and damage, ensuring your seacock remains watertight. With its environmentally friendly construction and durable materials, the GROCO Backing Block is the ideal choice for those who value quality and sustainability in their marine equipment.

What Our Customers Say

January 12, 2026

Absolutely no complaints!

Works as advertised, maybe better.

- Orlando S..

January 12, 2026

Absolutely no complaints!

Couldn't be more satisfied.

- Alaina Y..

January 12, 2026

Absolutely no complaints!

This is a very fine purchase.

- Rita B..

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