Thanks Tom After a bit of trial and error I found the following work well for me: - nitrile 70 duro - water fill use size: AS568-125 or go to Ace hardware and use Danco #25 - fuel and waste are bigger and seemed to want a thicker oring so I used size: AS568-222 I found orings in smaller quantities at The O-Ring Store online. They are cheap and I got a lifetime supply. A size larger or smaller would probably still work. David Carlson 865-201-3191 On Aug 30, 2021, at 15:23, Fire Fighter via Sentoa <sentoa@lists.sentoa.org> wrote:  I ordered a "bunch" of O rings from a local company for deckfill and other items (aftercooler and Groco strainer). The company is: Grizzly Supplies 19269 96th Avenue Surrey, B.C. V4N4C4 604.251-3554 1-877-505-0155 If I have the right codes (?) the deckfills are: Number 2-136 N70 Size: 2.00x .103 Cost: $0.29 each Number 2-222 N70 Szie: 1.500x .139 Cost: $0.33 each If memory serves, the deckfills are 2inch for the diesel and 1.5 inch for the waste and water (water may be 2 inch as well). I no longer own the Tug so cannot measure or access the O rings to measure. To obtain these measurements (for the first order), I sent in a sample of each O ring I wanted and the info here is from the invoice. Being as these O rings are so inexpensive, I changed them out annually. Definitely don't want water in the fuel. Hope that helps, Tom Easterbrook formerly Pilitak NT 37-068 Nanaimo, BC From: Rick Schmidtke via Sentoa <sentoa@lists.sentoa.org> Sent: August 29, 2021 8:00 PM To: South East Nordic Tugs Owners' Association (SENTOA) <sentoa@lists.sentoa.org> Cc: Rick Schmidtke <fhschmidtke@gmail.com> Subject: [Sentoa] Re: Deck Fill O-rings - NT32 Also looking for the o rings, went to the fill manufacturer, but they don’t sell the o rings separately a few years ago. Hope you find a source. Carpe Diem. 37-116. 2005 Commencement Bay, Washington Sent from my iPad Rick Schmidtke > On Aug 29, 2021, at 7:43 PM, David Carlson via Sentoa <sentoa@lists.sentoa.org> wrote: > This may seem like a trivial question, but I am struggling to find the correct o-rings for the 4 deck fill fittings (diesel, waste, and water (2)) on my 2007 NT32. I bought the Perko 1.5 inch o-rings from West Marine but they were a little bit oversize for the water fill and too thin for the fuel fill. > > Has anyone done the research and found the right sizes (and materials) for all 4 deck fill o-rings? > > > David Carlson > MV Dottie Jean > NT32-291 (2007) > Knoxville, TN > > > > _______________________________________________ > Sentoa mailing list -- sentoa@lists.sentoa.org > To unsubscribe send an email to sentoa-leave@lists.sentoa.org _______________________________________________ Sentoa mailing list -- sentoa@lists.sentoa.org To unsubscribe send an email to sentoa-leave@lists.sentoa.org