• Derfoe RTV SEC-688 silicone gasket maker is a fast-curing, acid cure non-corrosive compound. • Formulated for hi-temp applications. Replaces almost any cut gasket • Makes reliable " formed-in-place" gaskets that resist cracking, shrinking and migrating caused by thermal cycling. Coats pre-cut gaskets to increase reliability. • Temperature range -75° F to 662° F intermittent; resists auto and shop fluids. • Available in .35ml and 85ml tubes • Available color: black, grey, red, white, blue and clear Suggested applications include: • Valve covers • Oil pans • Intake manifold end seals • Timing covers • Transmission pans • water pumps