AROCLOR 1254 Chemical compatibility with O-rings, rubbers, & plastics

Aroclor 1254, also referred to as PCB-1254 or polychlorinated biphenyl 1254, is a chlorinated PCB blend formerly used in transformers, capacitors, hydraulic systems, and as a plasticizing agent. Like other PCBs, Aroclor 1254 is environmentally persistent and associated with serious health concerns, including carcinogenic and endocrine effects. When evaluating compatibility with O-rings, rubber seals, gaskets, and plastic materials, chemical resistance must be carefully reviewed to prevent swelling or deterioration. Strict handling, storage, and disposal controls are required to minimize contamination and maintain safe sealing performance.

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