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Groco

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Groco – Marine Seacocks, Thru-Hulls & Plumbing Hardware

Groco has been manufacturing premium marine plumbing hardware in the USA since 1906. Renowned for their bronze seacocks, thru-hull fittings, strainers, and marine valves, Groco products are the trusted choice of boat builders, marine surveyors, and serious cruisers who demand the highest quality in below-waterline hardware.

Why Groco is the Standard for Marine Plumbing Hardware

  • American-made since 1906 – Over 115 years of precision marine hardware manufacturing in the USA
  • Premium bronze construction – Naval bronze alloys that resist dezincification and corrosion in saltwater for decades of reliable service
  • ABYC & USCG compliant – Seacocks and thru-hulls engineered to meet the strictest marine safety standards for below-waterline installations
  • Trusted by marine surveyors – The brand that surveyors and yards specify for critical below-waterline hardware replacements

Popular Groco Products

Browse Groco bronze seacocks, thru-hull fittings, sea strainers, bronze valves, and marine plumbing hardware at LMC Shop.

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