Using Sika291 on windows

[Rol1964]

Is it ok to use Sika 291 on the internal slot and glazing gasket on the old aluminum 3 pc fixed cabin window frame? Planning to ise butyl on the outside flange.
Thx.

[GordMay]

Sikaflex “291" must not be used to seal plastics, that are prone to stress cracking [acrylic/PMMA/Plexiglas, polycarbonat/Lexan, etc].

[S/V Illusion]

Originally Posted by Rol1964

Is it ok to use Sika 291 on the internal slot and glazing gasket on the old aluminum 3 pc fixed cabin window frame?
Thx.

Yes.not a problem

[Rol1964]

Originally Posted by GordMay

Sikaflex “291" must not be used to seal plastics, that are prone to stress cracking [acrylic/PMMA/Plexiglas, polycarbonat/Lexan, etc].

There’s no plastic and it’s not prone to stress so it should be ok…