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FUEL OIL, 1 AND 2 Chemical compatibility with O-rings, rubbers, & plastics

Fuel Oil No. 1 and Fuel Oil No. 2, commonly called light distillate fuel oils or heating oils, are petroleum based fuels used in heating systems, boilers, and power generation equipment. These flammable hydrocarbons may contact O-rings, rubber seals, gaskets, and plastic components in pumps, valves, and fuel handling systems, so compatibility should be evaluated to prevent swelling or material degradation. Exposure can cause skin and respiratory irritation. Proper storage, safe handling procedures, and the use of appropriate PPE are recommended.

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