Aviation Form-A-Gasket™ No. 3 Sealant Liquid (80017) by Permatex®, 16 oz. Bottle. Slow-drying, non-hardening brush-top sealant approved for use in aviation as well as automotive applications. Temperature range -65 °F to 400 °F (-54 °C to 204 °C); resists gasoline, oil and grease.