The Lox-8 paste is designed to and withstand high-pressure and temperatures. Oxygen-safe, waterproof, and versatile. It works great with oil-based systems, hydraulic oils, and fuels. Lox-8 is recommended for use as both a lubricant and a sealant. Formulated for wet and dry applications as a high-density, multi-purpose, and cross-functional inert thread sealant. Oxygen-tested by The German Federal Institute for Materials Testing (BAM) and ASTM G72-82 and ASTM G86 (NASA).