Thanks for the response, I will contact Lewmar as I would prefer to use QEM seal.Suggest measuring the hatch and confirm hatch type, e.g., low profile, and look up size in the chart in this link, then click on parts to find replacement seal. Also you can refer to the Lewmar link for seal part number for your size hatch then contact nearest Lewmar dealer.
Is your boat "Watergate" Back Creek Annapolis?Lewmar front birth hatch seal size and where to order?
Some of us are also curious about the baby's name.... ?Lewmar front birth hatch seal size and where to order?