SailNet Community - Reply to Topic
Thread: Big Black Port Gaskets Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

  Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below

  Topic Review (Newest First)
03-18-2013 09:32 AM
Re: Big Black Port Gaskets

I know this is an old post but I just bought a 72 Morgan OI that need the same gaskets replaced can you tell me where to order everything from?

06-13-2012 11:40 PM
Re: Big Black Port Gaskets

Originally Posted by CaptainForce View Post
Even without the locking strip my new portlight gasket no longer leaks, but I do not think the ports will be safe offshore without the locking strip.
I have an OI 36, with the same port design.

Those ports have always struck me as being weak for offshore use. If I were doing an ocean crossing, I might pull the windows and gaskets out, and bolt pieces of Lexan over the openings, caulked to the hull.

I suspect that would be a heck of a lot more work than it sounds like.

Thanks for the post -- I may replace my own leaking-black-stripes-down-the-topsides gaskets, now.

Charles / Right Galah
01-09-2012 02:16 AM
Morgan O/I 41 Port Gasket

Originally Posted by Orionsue View Post
Thanks Aythya crew. I believe Stewart and Nancy and yes I also do know you from the Morgan 41 yahoo site!! It's a small world. I sent you the pdf on the Stan-Lock stuff not too long ago. I have emailed a distributor in California today and hope to hear from him. Thank you for your email. I will send you a reminder to find out what happened as you suggested.
Happy Sailing
S/V Orion

I have an O/I 41 in Fajardo, PR with the same leaky port problem that you have. Wanted to find out how you came out with the Stanlock gaskets.

S/V Abundance
02-18-2009 09:12 PM
CaptainForce The gaskets referred to in the posts above call for a 1/4 inch portlight. I've used the Lexan polycarbonate plastic which was cut with a saw and sanded. 'good luck with the project, Aythya crew
02-06-2009 04:04 PM
ashatsea I just got the gasket in yesterday.....What type of glass did you use Plexi/Lexan/Acrylic and what thickness did you go with I have been to two diffrent stores and none of the people working there have heard of Marine grade glass. Is there such a thing?

Last but not least did you cut the glass with a hot knife or did you cut it with a jigsaw and round out the edges with a sander?

I can't wait to start this project I think it will make my boat look like a million dollars when it is all set and done.
01-19-2009 02:35 PM
ashatsea Just bought a pair of ring pliers from Lowes for $18 my boat is in the water I'm hoping it won't be to difficult to do this laying on my stomach.
01-13-2009 01:44 PM
CaptainForce Matt, Thanks for that "ring" pliers idea. I have to admit that I worked very hard with the finger stress to complete my eight ports below the toe rail. I still haven't taken on the the four higher portlights in my aft cabin. When I do, I'll have the pliers. Stewart
01-11-2009 07:34 PM
Planb835 Don't forget the ring pliers!!!!

I tried to force that locking strip in with the marlin spike. My thumbs went numb for several weeks. After an hour I had 6" of locking strip installed. I trimmed off the excess and went home.

The pliers open up the gasket and it slides right in, sort of. It still takes some work. It took about an hour to finish the rest of the port.
01-08-2009 05:36 PM
ashatsea Thanks again I found a place locally in St. Pete for replacement windows and I will be ordering the gaskets and lock strip shortly..
01-05-2009 08:10 PM
CaptainForce Ashatsea, The invoice I have for the gaskets is the Stanlock product pruchased from Griffith Rubber Mills, P.O.Box 10066, Portland, Or. 97296, Phone= (503) 226-6971.
The item # for the gasket is 31513SL with the description SL-2026 1/4 x 1
The item # for the locking strip is 37653FTSL with the description
SL-1250 Lock Strip
As you read in the above postings, the gasket replaces the original well, but there is difficulty in applying the locking strip within the 3" radius turns at the ends of the portlights.
Here are views of my portlights before and after:

'take care and joy, Aythya crew
This thread has more than 10 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

For the best viewing experience please update your browser to Google Chrome