Sale!
![GROCO Backing Block f/3/4"1" Seacocks [BB-1]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/groco-backing-block-f-3-4-1-seacocks-bb-1.webp)
![Dometic MSD Fitting f/Large Tank 970 Series Toilets [385320007]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/dometic-msd-fitting-f-large-tank-970-series-toilets-385320007.webp)
![GROCO 1/2" NPT x 3/4" Bronze Full Flow Pipe to Hose Straight Fitting [FF-500]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/groco-1-2-npt-x-3-4-bronze-full-flow-pipe-to-hose-straight-fitting-ff-500.webp)
GROCO Backing Block f/3/4″1″ Seacocks [BB-1]
Original price was: $56.80.$42.23Current price is: $42.23.
Description
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
Related products
-
- Sale!
- Fittings
GROCO 1-1/4″ NPT x 1-1/2″ Bronze Full Flow Pipe to Hose Straight Fitting [FF-1250]
- Original price was: $27.20.$14.08Current price is: $14.08.
- Add to cart
-
- Sale!
- Fittings
GROCO 1″ NPT x 1-1/4″ Bronze Full Flow Pipe to Hose Straight Fitting [FF-1000]
- Original price was: $16.00.$9.79Current price is: $9.79.
- Add to cart
-
- Sale!
- Fittings
Perko Vented Flip Top Cap f/Fills with 1-1/2″ Hose – White [0795DP0WHT]
- Original price was: $36.51.$27.18Current price is: $27.18.
- Add to cart
-
- Sale!
- Fittings
GROCO 3/4″ Bronze Flanged Full Flow Seacock [BV-750]
- Original price was: $302.40.$173.31Current price is: $173.31.
- Add to cart
-
- Sale!
- Fittings
GROCO 1/2″ NPT x 3/4″ Bronze Full Flow Pipe to Hose Straight Fitting [FF-500]
- Original price was: $10.40.$5.78Current price is: $5.78.
- Add to cart
-
- Sale!
- Fittings
GROCO 1-1/2″ Bronze Flanged Full Flow Seacock [BV-1500]
- Original price was: $370.19.$258.24Current price is: $258.24.
- Add to cart
-
- Sale!
- Fittings
Perko 0542 Vented Fill f/1-1/2″ Hose – Angled Neck – Gas – Black [0542DPGBLK]
- Original price was: $44.09.$32.42Current price is: $32.42.
- Add to cart
-
- Sale!
- Fittings
Dometic Duck Bill Valve Kit – 1-1/2″ [385310076]
- Original price was: $38.39.$29.10Current price is: $29.10.
- Add to cart
![GROCO 1-1/4″ NPT x 1-1/2″ Bronze Full Flow Pipe to Hose Straight Fitting [FF-1250]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/groco-1-1-4-npt-x-1-1-2-bronze-full-flow-pipe-to-hose-straight-fitting-ff-1250.webp)
![GROCO 1″ NPT x 1-1/4″ Bronze Full Flow Pipe to Hose Straight Fitting [FF-1000]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/groco-1-npt-x-1-1-4-bronze-full-flow-pipe-to-hose-straight-fitting-ff-1000.webp)
![Perko Vented Flip Top Cap f/Fills with 1-1/2″ Hose – White [0795DP0WHT]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/perko-vented-flip-top-cap-f-fills-with-1-1-2-hose-white-0795dp0wht.webp)
![GROCO 3/4″ Bronze Flanged Full Flow Seacock [BV-750]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/groco-3-4-bronze-flanged-full-flow-seacock-bv-750.webp)
![GROCO 1-1/2″ Bronze Flanged Full Flow Seacock [BV-1500]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/groco-1-1-2-bronze-flanged-full-flow-seacock-bv-1500.webp)
![Perko 0542 Vented Fill f/1-1/2″ Hose – Angled Neck – Gas – Black [0542DPGBLK]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/perko-0542-vented-fill-f-1-1-2-hose-angled-neck-gas-black-0542dpgblk.webp)
![Dometic Duck Bill Valve Kit – 1-1/2″ [385310076]](https://www.hotcampzoneus.com/wp-content/uploads/2026/09/dometic-duck-bill-valve-kit-1-1-2-385310076.webp)