# Round gasket for Atkins Hoyle port-light? **URL:** \ **Category:** General\ **Created:** [September 17, 2026, 4:57pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579 "2026-09-17T16:57:19Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Jeff](https://avatars.discourse-cdn.com/v4/letter/j/e19b73/32.png) [@Jeff](https://nonsuch.discourse.group/u/Jeff)\ **Post date:** [September 17, 2026, 4:57pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/1 "2026-09-17T16:57:19Z")
My portlights leak a tiny bit and the gaskets feel rather hard and tired. Searching this group I see that replacement gaskets can be had cut to fit from McMaster Carr and other sources reasonably priced as round neoprene rod or tubing. Looking at my gaskets, they don’t look round at all? Are they just that squashed and tired? ![17896640789282273832327002219860](https://canada1.discourse-cdn.com/flex011/uploads/n26_115_233/original/2X/7/76de3f4d011a31b5a38c1e27cb96ffccdf7990b5.jpeg) ![17896641307959128007893492843782](https://canada1.discourse-cdn.com/flex011/uploads/n26_115_233/original/2X/4/4219e1224cb73c6f8f1e1755610fb2676f9825fc.jpeg) ---
**Author:** ![Rob](https://yyz1.discourse-cdn.com/flex011/user_avatar/nonsuch.discourse.group/rob/32/11_2.png) [@Rob](https://nonsuch.discourse.group/u/Rob)\ **Post date:** [September 17, 2026, 7:00pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/2 "2026-09-17T19:00:00Z")
An example of the material that was suggested to me is ( [HERE](https://www.amazon.com/dp/B00NL4D6SK?ref_=ppx_hzod_title_dt_b_fed_asin_title_1_0) ) An example of the glue is ( [HERE](https://www.amazon.com/dp/B000CCFXYY?ref_=ppx_hzod_title_dt_b_fed_asin_title_0_0&th=1) ) In another week or so I expect to have some 1st hand experience with installing them to share. For now I’m following advice from and owner of a boat with dry portlights. Sail on, Rob… ---
**Author:** ![Jeff](https://avatars.discourse-cdn.com/v4/letter/j/e19b73/32.png) [@Jeff](https://nonsuch.discourse.group/u/Jeff)\ **Post date:** [September 17, 2026, 7:27pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/3 "2026-09-17T19:27:36Z")
Thanks Rob. Do your current gaskets look like mine? Thanks for sharing. ---
**Author:** ![briancayer](https://yyz1.discourse-cdn.com/flex011/user_avatar/nonsuch.discourse.group/briancayer/32/46_2.png) [@briancayer](https://nonsuch.discourse.group/u/briancayer)\ **Post date:** [September 17, 2026, 7:52pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/4 "2026-09-17T19:52:12Z")
Again, thank you, Rob. I saved those items you posted to my list and will await your information. Forthcoming. Brian ---
**Author:** ![Rob](https://yyz1.discourse-cdn.com/flex011/user_avatar/nonsuch.discourse.group/rob/32/11_2.png) [@Rob](https://nonsuch.discourse.group/u/Rob)\ **Post date:** [September 17, 2026, 8:12pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/5 "2026-09-17T20:12:23Z")
Jeff, Hard to tell from the photos. In the post I made earlier this week ( [Leaky Windows](https://nonsuch.discourse.group/t/leaky-windows/10578) ) there is a video where I pull some of the gasket out and I show it in cross-section. Maybe you can tell from the video ? Seems like the gaskets on Soave started round and then compressed to fit the space available which may not be round. After a while the material doesn’t bounce back with as much force. My impression is that the gasket in my video started round and still had pretty good elasticity, my guess is the gap where the ends meet was the source of my leak. Not saying round is the only option, just the one presently used on Soave. I’ll bet there is an engineered gasket made with superior materials that would last longer. Probably cost more than a buck a foot. I’ll try to get to it this weekend and post details. Sail on, Rob… ---
**Author:** ![NS233\_Bob\_Neches](https://yyz1.discourse-cdn.com/flex011/user_avatar/nonsuch.discourse.group/ns233_bob_neches/32/120_2.png) [@NS233\_Bob\_Neches](https://nonsuch.discourse.group/u/NS233_Bob_Neches)\ **Post date:** [September 17, 2026, 10:04pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/6 "2026-09-17T22:04:38Z")
My notes from gasket replacement on the overhead hatches on my 26U four years ago was that it was round. I didn’t record the dimensions. My recollection is that I measured the gap between the two sides of the channel it’s going into and the depth of the channel (half of the round) and guesstimated my size from those. Haven’t had leaks (at least from there) since I did it. -- Bob ---
**Author:** ![RMP](https://avatars.discourse-cdn.com/v4/letter/r/9dc877/32.png) [@RMP](https://nonsuch.discourse.group/u/RMP)\ **Post date:** [September 18, 2026, 12:54am UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/7 "2026-09-18T00:54:42Z")
The gaskets started out round. If you go to the Atkinson and Hole website and look up parts they list the gaskets and size. ---
**Author:** ![Rob](https://yyz1.discourse-cdn.com/flex011/user_avatar/nonsuch.discourse.group/rob/32/11_2.png) [@Rob](https://nonsuch.discourse.group/u/Rob)\ **Post date:** [September 18, 2026, 11:41am UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/8 "2026-09-18T11:41:05Z")
Mark, Thanks for referring to the site. I noticed that two diameters of gasket are specified for some of the ports. 3/8" prior to 1985 and 1/2" after 1985. So before ordering ( or ripping out old gasket material it’s a good idea to check. I’ll be checking Soave this weekend. She’s an '87 but you never know which version of the hatches and ports were used. Thanks, Rob… ---
**Author:** ![Jeff](https://avatars.discourse-cdn.com/v4/letter/j/e19b73/32.png) [@Jeff](https://nonsuch.discourse.group/u/Jeff)\ **Post date:** [September 18, 2026, 1:01pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/9 "2026-09-18T13:01:50Z")
Thanks Mark ---
**Author:** ![RMP](https://avatars.discourse-cdn.com/v4/letter/r/9dc877/32.png) [@RMP](https://nonsuch.discourse.group/u/RMP)\ **Post date:** [September 18, 2026, 5:26pm UTC](https://nonsuch.discourse.group/t/round-gasket-for-atkins-hoyle-port-light/10579/10 "2026-09-18T17:26:16Z")
I was lucky. La Reina was built in 1982 so I was fairly certain she had the older style ports.