Permatex's The Right Stuff® 90 Minute Grey High Torque Gasket Maker, 30 oz. are the only gasket makers in a tube that can return the vehicle back to service in just 90 minutes curing time! Fast return to service; trade up from 24 hour return to service RTV's. Addresses consumer specific turn around need. OEM Specified. Sensor-safe, low odor, non-corrosive. Non-flammable, non-toxic. Can be used as a gasket maker or dressing. Meets performance specs of OE silicone gaskets.