TheBMan Posted March 18, 2022 Share Posted March 18, 2022 Well, it's that time of year; time to get the car ready for summer drives and show season. Does anyone know the specs for the o-ring shown where the arrow is pointing? Mine is leaking and I can't find the size/spec in the manual. I've replaced it before using one of those kits you get from the various reproduction parts houses but I wonder if it's the correct size. I'm looking for dimensions. For example, 11/16x1/16. Thanks for the help! Quote Link to comment Share on other sites More sharing options...
TheBMan Posted March 21, 2022 Author Share Posted March 21, 2022 Nobody has a parts reference for this? Quote Link to comment Share on other sites More sharing options...
jft69z Posted March 21, 2022 Share Posted March 21, 2022 Best bet is to contact one of the A/C places like Original Air Group, Vintage Auto Air, Classic Auto Air, etc. That, or a local auto A/C specialist if you have any in your area. I have a boatload of o-ring kits from various A/C jobs over the years, but to pinpoint the exact one you need would be difficult without having the parts in front of me. NAPA sells the A/C O-ring service kits, and are bound to have one in there you need. Quote Link to comment Share on other sites More sharing options...
TheBMan Posted March 21, 2022 Author Share Posted March 21, 2022 Thanks @jft69z Joe. I did talk to Original Air Group, they didn't know. I have o-ring kits but the problem is that there are a few o-rings that are very close in size to one another. Trying to pinpoint the correct one. I think I just need to give it my best shot based on experience and logic. 😎 I was hoping someone had a parts reference book that had specifics. The regular factory service manual does not. Thanks! Quote Link to comment Share on other sites More sharing options...
jft69z Posted March 21, 2022 Share Posted March 21, 2022 22 minutes ago, TheBMan said: I think I just need to give it my best shot based on experience and logic. That's exactly what I have done numerous times in the past. If the groove is wide, I'll look for one of the thicker o-rings, but sometimes they're too thick to the point it won't slide into the other fitting. If it's too thin, it won't seal, lol. I have more than enough kits here that I can usually find something to work good though. Good luck! 1 Quote Link to comment Share on other sites More sharing options...
420ponies Posted March 21, 2022 Share Posted March 21, 2022 Anyone doing that business in your area and specially our 1st gen Montes, or a any "A" Body will know exactly what to use.We have a local that can do wonders on any A/C unit on any manufacturer. Check around your area on any shops that do A/C work, you'll be amazed at what they know. 1 Quote Link to comment Share on other sites More sharing options...
Grant MacPherson Posted March 21, 2022 Share Posted March 21, 2022 There is also an AC spray sealant that lubricates and seals, also works as a thread lubricant. I can send you a picture of the can if interested 1 Quote Link to comment Share on other sites More sharing options...
1970mcss Posted March 22, 2022 Share Posted March 22, 2022 I tried to find a part number but no luck 1 Quote Link to comment Share on other sites More sharing options...
Rancid87 Posted March 22, 2022 Share Posted March 22, 2022 I checked the original line off my car against a store style o-ring assortment I have(the old kind where each compartment has a specific size of o-ring so you can buy just the one you need) and the one that seems to be the best fit has the following specs: ID: 3/4 OD:15/16 Thickness: 3/32 The original o-ring is very compressed and flattened so pretty difficult to tell its original dimensions. 1 Quote Link to comment Share on other sites More sharing options...
TheBMan Posted April 1, 2022 Author Share Posted April 1, 2022 On 3/21/2022 at 7:43 PM, Grant MacPherson said: There is also an AC spray sealant that lubricates and seals, also works as a thread lubricant. I can send you a picture of the can if interested @Grant MacPhersonThat would be great! Thanks! Quote Link to comment Share on other sites More sharing options...
TheBMan Posted April 1, 2022 Author Share Posted April 1, 2022 On 3/22/2022 at 1:43 PM, Rancid87 said: I checked the original line off my car against a store style o-ring assortment I have(the old kind where each compartment has a specific size of o-ring so you can buy just the one you need) and the one that seems to be the best fit has the following specs: ID: 3/4 OD:15/16 Thickness: 3/32 The original o-ring is very compressed and flattened so pretty difficult to tell its original dimensions. @Rancid87 This is GREAT!! Thank you!! Quote Link to comment Share on other sites More sharing options...
John S Posted April 1, 2022 Share Posted April 1, 2022 If you can get a measurement on it you can look at a company called McMaster Carr, a huge supply house. They have a huge selection of O-rings, the only problem is you may have to buy a packet of 10, 25, or maybe 50 but they are low priced. John S Quote Link to comment Share on other sites More sharing options...
Grant MacPherson Posted April 1, 2022 Share Posted April 1, 2022 Here is the sealant Quote Link to comment Share on other sites More sharing options...
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