Flanged seacock installation is improved with the use of a backing block between the valve flange and the hull.
- Each size fits multiple seacock sizes
- Press threaded inserts into the hull side of the backing block into the holes that match the seacock flange
- 1/2" thickness is rigid enough for a secure installation but flexible enough to conform to minor hull curvature
- Will not swell or absorb moisture
| Brand | Groco |
| _Fits | 3/4" & 1" Seacocks |
| _Size | 4.29" Dia. |
| _Bolt | 5/16" - 18" |
| Shipping Details | |
| Weight: | 0.30 lb |
| Length: | 4.25 in |
| Height: | 0.5 in |
| Width: | 4.25 in |