NITRIC ACID CONCENTRATED TO 158°F Chemical compatibility with O-rings, rubbers, & plastics

Concentrated nitric acid, also referred to as strong nitric acid or HNO3, at temperatures up to about 158°F is a powerful oxidizing mineral acid widely used in fertilizer manufacturing, explosives production, pharmaceutical synthesis, and metal etching or surface treatment operations. Because this acid is highly corrosive and reactive, material selection in fluid handling equipment is critical. When evaluating chemical compatibility, O-rings, rubber seals, gaskets, and plastic components must be carefully reviewed to avoid rapid degradation or seal failure. Proper handling, storage, ventilation, and protective equipment are essential for safe industrial use.

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