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- USA
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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26
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For Your Every Summer RSVP, with Code: SUMMER15
Description
GROCO Backing Block f/3/4" 1" Seacocks [BB-1]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:
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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Fit well
Size: Medium, Color: Black
Fit great and washed well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026
★★★★★ 5
Buying more!
Size: Medium, Color: Black
Perfect fit and warmth.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Long Johns
Size: Small, Color: Navy
Great fit, nice and warm!
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Reviewed in the United States on February 3, 2026
★★★★★ 5
Commfrotable and warm
Size: Large, Color: Dark Grey
Very light weight and comfortable.
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Reviewed in the United States on March 12, 2026
★★★★★ 5
Right size item
Size: Small, Color: Light Grey
Make sure you order the right size. I received Small size & not Large. My fault. But, it still fit ok, a little snug, yet it made me feel warm when I went outside. I will be ordering a large size in the near future. Some one else in the family will get the small size item.
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Reviewed in the United States on February 11, 2026