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RHS Boating & Marine

Ronstan Marine Drain Plug Replacement Washer – Boat Plumbing Fittings 400739

$1.50 each
Brand: Ronstan Marine Cleats, Drain Plugs & Boat Hardware

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Ronstan Drain Plug Replacement Washer

Refresh a compatible drain-plug assembly with the correct replacement washer. This red Ronstan washer is specified for drain plugs 400293 and 400738, giving you an exact part-code match to check before ordering.

Confirm the code of the plug already fitted and inspect the mating surfaces when replacing the washer. Colour alone is not a reliable way to establish compatibility. This listing supplies the replacement washer; use the matching plug code to distinguish it from a complete drain fitting.

Choosing and using this product

This is a targeted replacement purchase, so keep the parent equipment reference beside the part number while checking the order. If several similar assemblies are fitted aboard, identify the relevant position as well. That distinction helps ensure the part is ordered for the equipment actually being serviced.

When comparing alternatives, use the specified material and intended application rather than assuming every marine fitting is suitable for every liquid. Keep the part reference with the plumbing records so future spares can be matched to the connection actually installed.

Keep service points accessible and follow the relevant system instructions for fastening, sealing and hose support. Avoid forcing a hose or thread to compensate for an unsuitable fitting. Confirm the finished connection and normal system operation before putting the installation back into use.

Plan the connection from the system outward: identify the fluid application, mating thread or hose size, and the space available for the fitting. A nominal pipe-thread size is a separate measurement from a hose diameter, so compare the correct dimension at each connection.

Check the stated contents when putting together the plumbing run. A fitting-only listing does not necessarily include hose, clamps, seals or a mounting assembly. Lay out the required connections before installation so the finished arrangement can be checked as a whole.

Product details

  • Red replacement washer to suit 400293 and 400738 drain plugs.
  • Product code: 400739