MicroLubrol ARMASIL AIRGUN OIL IS A TRULY HIGH-PERFORMANCE 100% SILICONE OIL PRODUCT WITH A MORE COMPLEX MOLECULAR STRUCTURE DESIGNED FOR HIGH TEMPERATURE, HIGH SHEAR AND HIGH COMPRESSION APPLICATIONS. MicroLubrol ARMASIL AIRGUN OIL is a true high performance silicone oil that consists of specially formulated, more complex silicone molecules that give it higher shear resistance, temperature resistance, compression resistance, chemical resistance and overall breakdown and degradation resistance not found in common PDMS oils, even ones with higher viscosities. MICROLUBROL ARMASIL AIRGUN OIL is completely neutral and unreactive and cannot possibly damage any metal part. In addition, MicroLubrol ARMASIL AIRGUN OIL is compatible and recommended for use with most rubbers and elastomers including natural rubber, Buna-N, Nitrile, Butyl, EPDM, Neoprene, Silastic, and fluorocarbon rubbers like Viton and Chemraz; and plastics including Nylon, Polypropylene, Polyurethane, Polycarbonate, Polyacrylate, Styrene Butadiene, Polysulfide and PTFE/Teflon. MicroLubrol ARMASIL AIRGUN OIL is NOT an automotive grade oil and does NOT contain ANY petroleum distillate products OR synthetic petroleum-based oils such as PAO oils. Petroleum based fluids do NOT have the high-shear, high-temperature resistance of MICROLUBROL ARMASIL AIRGUN OIL and can "diesel" or "tar" when used in high-compression applications.