Yet many boats of yesteryear didn’t feature these seals. Or, if they did, the seals may have worn out by now. Installing a fresh seal is easy, as we demonstrate here on a bilge hatch of a 1986 center-console using a closed-cell medium density rubber seal from Taco Marine, which features a durable self-adhesive backing. This seal is made for Taco by Trim-Lok, a leading supplier of seals for cars and boats. Trim-Lok’s marketing director, Dan Whitener, helped us with this project.