Poly 74-40 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a Shore A40 rubber. This is a pourable rubber, but it can be easily thickened with PolyFiber II Thickener for brush-on application.
![](https://cdn.shoplightspeed.com/shops/606431/files/50692769/7440specs.png)
SDS Part A
SDS Part B
Tech Sheet