Port hole gasket materiel

[wolfenzee]

In my search for stuff to rebuild my boat with I came across a milk crate full of bronze, at the bottom of the milk crate was two 8" opening bronze ports, which were covered with a considerable amount of paint, including the gaskets. These are too old to have a manufacturer name on them. Does anyone know what I can use to make new gaskets, for the opening portion of the port.

[Maddog046]

How is the gasket attached? Is it just glued on? If so, get some neoprene of the same thickness and make some new ones. If it is a fitted gasket that pushes into a groove, I'm not so sure. There may be a similar gasket you can buy off the roll. Check Grainger's or check these two places.

cleanseal.com/
mcmaster.com/

[sailingdog]

I'd second using Neoprene, but it depends a bit on how the gaskets attach to the port itself. Graingers, CleanSeal and McMaster-Carr are excellent resources. If you take the gaskets off, you'll have a pretty good idea of what attachment method they require and something off the shelf may well fit.

[ccriders]

Look in your yellow pages for "gaskets" and you wil probably find an industrial supply source. They can help you identify what you need and probably can supply it while you wait.

[EO32]

The gaskets on my port holes are cracked and falling apart. They are in a 1/4" groove in bronze frames and it seems like a hard rubber. I was thinking it might require a filler of some sort, like a poly sulfide.

[ahab211]

Ultra glaze sealant by 3M will seal your portholes without a gasket. it is black and messy but turpentine will clean it up.

[SEMIJim]

Originally Posted by ahab211

Ultra glaze sealant by 3M will seal your portholes without a gasket. it is black and messy but turpentine will clean it up.

It looks like the OP is talking about portholes, as opposed to portlights. If so: He's looking for gasket material to seal the closed porthole in its frame, as opposed to the frame in the boat.

Jim

[davidcms]

butyl tape from RV or Mc Master carr
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[sailingdog]

Butyl tape is probably a decent solution for DEADLIGHTS, but not opening ports... which need something either rubber, plastic or neoprene and not sticky.

[wolfenzee]

This is for the opening part of two 8" opening ports, originally a 1/4" wide gasket that was painted over. I found the solution in a very un-boat source. A "hydraulic ram sweeper" (a great big O-ring used in very big hydraulic rams).