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post #1 of 13 (permalink) Old 04-15-2019, 12:04 PM Thread Starter
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Gas cap seal

Hi all, quick question, as I've been searching the internet and on here forever and cant find an answer. Is there a part number for the Triumph Bonneville locking gas cap rubber seal/gasket? The seal on mine is cracking and has begun to reak and leak, the cap itself is fine and dont wana have to buy a new one until someone comes up with something in black that's cool, and possibly with the locking caps ratchet mechanism on tightening, n doesnt cost the earth lol any help will be much appreciated, thanks
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post #2 of 13 (permalink) Old 04-15-2019, 12:43 PM
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Sorry I don't have a part # but that "O" ring is very common on automotive OE gas caps. Have checked mid 90's GM and Honda caps and the seal is the same. I'm sure other later model vehicles use the same seal, I just haven't checked. Check the one on your car, it may be the same. It may be easy to find one for a common auto, if not new from a salvage yard.
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post #3 of 13 (permalink) Old 04-15-2019, 01:31 PM Thread Starter
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Hey, thanks. I don't have car so cant check that, no need for one here in Barcelona 😁 but I will ask around some auto shops or even bike shops if it's quite common. Thanks for the advice
I did email Triumph out of curiosity, no reply yet, but I expect it'll be a stupid price if they even have one.
Thanks again 👍
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post #4 of 13 (permalink) Old 04-15-2019, 02:50 PM
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Not sure if this will help you but Bike Bandit has a seal for my gas cap. 2002 Bonneville. Maybe the measurements might be worth something for you to check.

24: SEAL,ID39, OD51, 5MM THK T3600075 $6.46
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post #5 of 13 (permalink) Old 04-15-2019, 04:53 PM Thread Starter
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That helps a lot! Thanks 😀 I checked locking cap compatibility, as that fits mine, and its says the bonneville from 2001-2015 is compatible. So that's great it's that part number. Although even with that I can only find it on bike bandit and 2wheelspro, who say it's been discontinued. But at least I have something to go on now. I would order from bike bandit but the shipping to Spain is $121.11 .🤣
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post #6 of 13 (permalink) Old 04-15-2019, 07:27 PM
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going off back 2-2's info these should do

if you want to use nitrile

https://www.bearingstation.co.uk/Pro...49.99mm/OR40X5

or if you want to use viton

https://www.bearingstation.co.uk/Pro...99mm/OR40X5VIT

who wudda thought id wanna bonneville!
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post #7 of 13 (permalink) Old 04-16-2019, 03:41 AM Thread Starter
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Thanks Mike! I think i will order these as cant go wrong at that price and my dad is coming to spain at end of month so I can have them posted to N. Ireland in time n he can hand deliver them with the rest of my bike goodies I've sent to the folks house lol just to be sure these are the correct sizes in your link? I assume they are.
Got a reply from Triumph here in Barcelona today and apparently you cannot buy the o ring separately, you have to buy a complete new locking cap! You have all been a lot of help n I really appreciate it! Thanks a million guys 😁👍😎
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post #8 of 13 (permalink) Old 04-16-2019, 04:43 AM
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The links are the nearest sizes I could find on that site to the sizes that back 2-2 gave. And I would imagine they would be close enough to work.

I'm sure there must be a hydraulic hose supplier or industrial equipment supplier in Barcelona who would carry this type of o ring, which would be quicker and probably cheaper than the UK company.
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post #9 of 13 (permalink) Old 04-16-2019, 07:09 AM Thread Starter
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I realised after.posting that I should just go and measure the original lol half asleep this morning n 2 new puppies have my head turned haha

Honestly it's probably quicker n cheaper goin the uk route, for now anyway, until I discover somewhere else. Its unusually difficult to find simple things here compared to uk. Or at least I'm just not in the know about it all. Anyway, I'll go measure the original to be sure n get my order in. Thanks again guys, y'all rock! 🤘😎
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post #10 of 13 (permalink) Old 04-16-2019, 09:06 AM
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Just for some clarity. Those measurements from the bike bandit parts listings are for my 2003 gas cap. I took a look and my gas cap does not appear to be a true O-ring but more of a thick flat gasket. Sort of has the appearance of a O-ring that becomes flat ove rtime even though I do not believe that is what it was or is. Without removing it appears to measure as listed. But it looks like it could work as an O-ring replacement. I think it's worth a try if you can locate one and if the seal on your cap is close to the same.

Hope that helps a little.

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