The International Cessna^® 170 Association

George,
I have tried various ways of using stainless steal foil to no avail. No matter how carful I am tightening the exhaust coupling bolts the foil always bunches up at the clamp flange and leaks. I have had much better luck using a very high temperature Hylomar product between the clamps and the stack joints. The Hylomar compound I am referring to can be viewed here http://www.valco-hylomarproducts.com/exh_sealant.htm

Arish,
I promise to look at the tube the next time I am at my hangar and report which one I used.

johneeb wrote:George,
I have tried various ways of using stainless steal foil to no avail. No matter how carful I am tightening the exhaust coupling bolts the foil always bunches up at the clamp flange and leaks. I have had much better luck using a very high temperature Hylomar product between the clamps and the stack joints. The Hylomar compound I am referring to can be viewed here http://www.valco-hylomarproducts.com/exh_sealant.htm

Yes, I guess my technique of wrapping must somehow differ because I can imagine such a problem...I've just not had it. I make certain the ends are overlapped not at that flange, but at the back-channel.

As for Hylomar, .....I agree they make fine products. I wrote about their exhaust paste here:
http://www.cessna170.org/forums/viewtop ... mar#p62318

Aryana wrote:I've talked with other folks who swear by the Hylomar paste too John. Did you use the assembly paste or the repair putty?

Arish I maybe slow but I am forgetful, here is the Hylomar product I use.

Hylomar can be found at Amazon and at:
http://www.hylomar.com/