Permatex® The Right Stuff® 90 Minute Gasket Maker – BLACK. The Right Stuff® 90 Minute is the only gasket maker in a tube that can return a vehicle back to service quickly – just 90 minutes curing time! It outperforms pre-cut gaskets by providing superior adhesion to flanges with maximum flexibility. A premium professional grade gasket maker for today’s fast-paced professional garage and heavy DIY’er. Temperature range -65°F to 500°F Intermittent. Compared to Permatex® the Right Stuff® GREY Gasket Maker, our BLACK formula offers higher oil resistance and greater flexibility.