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Portlight gasket replacement on CB35

For 32, 32+2, 35, and 45 owners.
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Rondo
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Joined: Thu Jul 04, 2019 1:37 pm
Home Port: Apollo Beach, FL

Portlight gasket replacement on CB35

Post by Rondo »

Like most more recent CB vessels, our 2007 CB 35 has six lovely SS opening portlights in the forward cabin. 83.3% of them are not leaking. The one, leaking a lot. I have determined that these most likely are "Passage Series" by Bomar. I can see that the rubber gasket material has deteriorated and pulled away from the outer frame, so a leak is no surprise. This is understandably due to exposure to 14 or 15 years of UV exposure to the Florida sun. A call to Bomar finds that they do have this material available. It is pricey at $12 per foot, plus some kind of environmental surcharge of 15%. This appears to be a custom extruded rubber product, so no good options, unless someone here can steer me to something that works. Anyone out there that has successfully done this?
Rondo
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Pitou
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Joined: Thu Feb 22, 2007 1:34 pm
Home Port: Gloucester, MA
Location: Essex, MA

Re: Portlight gasket replacement on CB35

Post by Pitou »

Well you've done better than I when I eas rebedding one of my Passage series ports a couple plus years ago when Bomar told me that they did not provide gasket material for their portlights, leaving it to the installer to choose what's best for their install.

I used butyl tape which I use for almost all above waterline bedding and it worked great for the rebedding of my Passage Series portlght as well. Amazon has a tone of it and this looks similar to what I had gotten a few years back from Compass Marine, but Compass is no longer selling product.

https://www.amazon.com/GSSI-Sealants-Bu ... r=8-5&th=1
kevinS
>><<>>;>

Former Boats:

- 2006 31TE / Hull# 221
Cummins QSC 8.3 / 500 hp
December '13 - April '23

- 2002 / 28TE / Hull# 614
Cummins 6BTA 370 hp / Alaskan Bulkhead
April '04 ~ May '13
Rondo
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Posts: 67
Joined: Thu Jul 04, 2019 1:37 pm
Home Port: Apollo Beach, FL

Re: Portlight gasket replacement on CB35

Post by Rondo »

THanks for the tip. If I end up removing the port for rebedding it will be handy. However, i am pretty sure the leak is due to decomposition of the rubber gasket inside. It appears that I can remove the old rubber and replace whihout removing it from the boat. The leak clearly coming from between the glass and the gasket. I have found something I think has a chance of solving the issue. I'll post if it works.
Rondo
Rondo
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Posts: 67
Joined: Thu Jul 04, 2019 1:37 pm
Home Port: Apollo Beach, FL

Re: Portlight gasket replacement on CB35

Post by Rondo »

I tracked down the right rubber extrusion for the Bowmar portlight seals. It is part number S-217. It is sold by the foot, has an aggressive peel & stick adhesive, so you only need to glue the ends together. I found it in stock at Fawcett Boat Supplies in Annapolis. $13 per foot.
Rondo
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Pitou
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Posts: 2091
Joined: Thu Feb 22, 2007 1:34 pm
Home Port: Gloucester, MA
Location: Essex, MA

Re: Portlight gasket replacement on CB35

Post by Pitou »

Rondo wrote: Mon Jun 20, 2022 7:23 pm I tracked down the right rubber extrusion for the Bowmar portlight seals. It is part number S-217. It is sold by the foot, has an aggressive peel & stick adhesive, so you only need to glue the ends together. I found it in stock at Fawcett Boat Supplies in Annapolis. $13 per foot.
Rondo
Thanks for sharing this.
kevinS
>><<>>;>

Former Boats:

- 2006 31TE / Hull# 221
Cummins QSC 8.3 / 500 hp
December '13 - April '23

- 2002 / 28TE / Hull# 614
Cummins 6BTA 370 hp / Alaskan Bulkhead
April '04 ~ May '13
Nancy
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Posts: 1906
Joined: Thu Apr 23, 2009 8:41 pm
Home Port: Lake Champlain

Post by Nancy »

Great info - thank you!
Nancy
2005 Albin 35CB
Yanmar 6LYA-STP 370
Valentine

Former boats
1995 Albin 28TE, Cummins 6BTA5.9 250, 2012-2022
1978 Trojan F32, 1998-2012
1983 Grady White 241 Weekender, 1988-1997
1980 Wellcraft 192 Classic, 1983-1987
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