77 GMC evap housing seal

[RSMII]

I need to replace the seal on evap/blower fan housing and the evap core on a 77 GMC C15. Anyone have a source for those or what is actually used, is it an actual soft seal or something else? Thanks.

 

[Bextreme04]

I need to replace the seal on evap/blower fan housing and the evap core on a 77 GMC C15. Anyone have a source for those or what is actually used, is it an actual soft seal or something else? Thanks.

Apparently it's originally a 3M product called Strip-Calk.

https://www.gmsquarebody.com/threads/sealing-evaporator-core-box.10635/

 

[RSMII]

Ok, I'll give that a look. Thanks!

Butyl tape....I have some of that.