Ricky k Posted October 1, 2020 Share Posted October 1, 2020 Has anyone on here used a different manifold sealant other than the standard Mack sealing rings? I’ve seen a comment from someone reckons he has used an Exhaust sealant from CAT? Quote Link to comment https://www.bigmacktrucks.com/topic/64417-e9-exhaust-manifold-sealants/ Share on other sites More sharing options...
AZB755V8 Posted October 1, 2020 Share Posted October 1, 2020 Sure, there are several ways to do it. Depends how good the fit is between the male and female parts. If there are groves worn into the female parts putty or cement is best. I think the actual seal rings from Mack are NLA. If you want to take the time get a piston ring catalog from Total Seal or some other ring manufacture, measure the female diameter and width of groove on the male and order rings to match, not the same as Mack parts but will work. Let us know what part numbers you come up with. If that is more than you want to do and have deep grooves in the parts get some boiler putty or wood stove seal cement. Got to leave it sit over night then run it up over 600 degrees for a while on the pyro the next day to cure, should be fine until next time. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/64417-e9-exhaust-manifold-sealants/#findComment-461730 Share on other sites More sharing options...
Ricky k Posted October 25, 2020 Author Share Posted October 25, 2020 Cheers for that, I managed to get some exhaust sealant from Westrac (CAT) apparently it’s the same stuff they used on there v8s works pretty good.. there’s no sign of any wear or groves between the male or female fittings. Quote Link to comment https://www.bigmacktrucks.com/topic/64417-e9-exhaust-manifold-sealants/#findComment-462997 Share on other sites More sharing options...
Back In Black Pulling Posted October 30, 2020 Share Posted October 30, 2020 Have a guy that does this to them and use's PDI Cummings style seal seams to work pretty good Quote Link to comment https://www.bigmacktrucks.com/topic/64417-e9-exhaust-manifold-sealants/#findComment-463270 Share on other sites More sharing options...
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