Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe and Non-Corrosive, for High Flex and

About this product

This is an RTV silicone gasket maker engineered specifically for high oil resistance and flexibility under thermal expansion. It features a sensor-safe, non-corrosive formula designed to replace cut gaskets or seal stamped metal components like oil pans and timing covers. It suits DIY mechanics and professionals performing engine or transmission maintenance requiring leak-proof seals.

What works well

• ✓Resists powertrain fluids, particularly motor oil and transmission fluid
• ✓Sensor-safe formula will not trigger check engine lights or ruin sensors
• ✓Remains flexible to handle vibration and thermal expansion without cracking

Worth knowing

• !Requires a full 24-hour cure time before re-filling fluids
• !Messy to squeeze and smooth without prior experience or proper tools