GROCO Backing Block f/1-1/4" 1-1/2" Seacocks [BB-2] Boat Outfitting | Steering Systems Internal Delrin Bushings and Nylon

Internal Delrin Bushings and Nylon Bearing Surfaces provide smooth operation and prevent metal to metal contact

For use with the original Dual Action Polisher

MK5 Universal Manual Bilge Pump

A Sure Fit

SOLAS approved

GROCO Backing Block f/1-1/4" 1-1/2" Seacocks [BB-2] Boat Outfitting | Steering Systems Internal Delrin Bushings and NylonBacking Block for 1 1 4" & 1 1 2" 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: