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Groco Backing Blocks – Flanged Seacocks


Backing blocks ease installation of flanged seacocks ensuring a professional robust fit and removing unnecessary work.

Backing blocks improve installation of flanged seacocks, reducing potential for leaks and lowering fit time.

Unsure on your exact requirement, call our expert technical advice team on 01202 600011 or use our live chat functionality.

  • 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
  • Made in the USA
  • Backing block
  • Installation instructions

Groco Backing Blocks – Flanged Seacocks

Groco BSPP Range Overview