6501 Standard Activator Substitute

[Scjarena]

Was hoping to spray a just a door on a Suburban after it was replaced. I know I had some extra SPI sealer left over from a previous job, now i realize I don't have enough activator. I wonder if I could use some of the "Masterpro" Orielly's generic harderner. Wanted to get this job done asap, and not wait to order. Thanks

 

[Chris_Hamilton]

Was hoping to spray a just a door on a Suburban after it was replaced. I know I had some extra SPI sealer left over from a previous job, now i realize I don't have enough activator. I wonder if I could use some of the "Masterpro" Orielly's generic harderner. Wanted to get this job done asap, and not wait to order. Thanks

Not likely it will work. Use it and you'll probably end up redoing everything. Call Barry on the tech line and ask him but I think he will say it won't work. Different products different formulations, ingredients etc. None of it is the same.

 

[RenewAP]

Most urethane hardeners will work with other urethane products, problem is, your cure times are out the window. It will be too fast or too slow, or chemistry differences may cause future delamination issues. Unless this is for some lawn furniture or an old knock around trailer, don't do it. As Chris stated, a redo is probably the result.

 

[Barry]

Never, it will dry but never cure properly.
It's all about Oh/NCO ratios, orilley does not know mine, and I don't know theirs.
All 4.1s are different ratios.

 

[AAE]

 

[Scjarena]

Ok, thanks. Its for an old driver Suburban, but I still don't want rework. I'll just wait and get the proper activator.