Grey 999 RTV Silicone Gasket Maker Abro OEM Grade Sensor Safe Oil & Antifreeze Resistant Sealant. Sensor Safe Formula: Neutral cure formula is safe for oxygen sensors and sensitive electronics. Chemical Resistance: Resists oil, water, and antifreeze for durable sealing performance. Custom Gasket Capability: Forms custom gaskets of any size or shape to replace pre-cut options. OEM Grade Quality: Specially formulated for import engines with high-performance standards. Non-Corrosive: Safe for all engine metals including aluminum, cast iron, and steel. Complete Application Kit: Includes applicator nozzle for precise bead placement and easy use. Flexible & Durable Seal: Creates a flexible, leak-proof seal that withstands vibration and thermal cycling.