This seal for Lewmar Flush Hatch 3G size 20 is an EPDM spare part for replacing the seal on the lower frame of the deck hatch.
The seal provides a gasket between the hatch acrylic panel and the lower frame. It contributes to a watertight closure, secures the acrylic panel in the hatch frame, and reduces the risk of rattling.
The seal is held in the corresponding profile on the lower frame beneath the acrylic panel. It is installed without glue, and a small amount of petroleum jelly can be used to facilitate installation. After replacement, it should be verified that the seal pressure is even when the hatch is closed.
This spare part is specifically designed for the Lewmar Flush Hatch 3G size 20. The compatible hatch can be found with, among others, Lewmar part numbers 399204996 for grey acrylic and 399204924 for dark grey acrylic.
The seal must be protected from damage caused by hoses, cables, tools, and other equipment during installation and yard work. It must not be confused with seals for Flush Hatch 1G/2G, Low Profile Hatch, or Ocean Hatch.
Key featuresSpare part for Lewmar Flush Hatch 3G size 20
Made of EPDM
Installed on the lower hatch frame
Seals between the acrylic panel and the frame
Helps prevent water ingress and rattling
Installation without glue
Always check the hatch series and size number before purchasing
