157mm Hatch Cover.

This is an externally sealed hatch cover.

The gasket (body) is fixed to the hull of the boat and the A.538 O ring is placed around the gasket, under the small lip. The hatch cover lid is then screwed tight onto the gasket and forms a seal with the O ring around the external diameter of the hatch.

This hatch cover requires O ring A.538 to be installed for complete water tightness.

PLEASE NOTE – A.538 is not included.