AMERISEAL PRODUCT AND THE STATE OF CALIFORNIA'S PROPOSITION 65
EPDM is a synthetic rubber. It is commonly used as a gasket material for water applications. In the solid, room temperature form, EPDM is basically inert as all ingredients are tightly bound in a polymeric matrix. However, if heated, exposure to some ingredients is possible. One of the ingredients in EPDM is Carbon Black. Carbon Black is known to The State o California to potentially cause cancer.
Nitrile is a specific and very popular form of synthetic rubber. Nitrile is one of the synthetic rubbers which are manufactured with Butadiene. Butadiene should not be present in its gaseous form when considering the final rubber product. However, it is impossible to guarantee that there is no chance of contamination or outgassing. Butadiene is known to cause cancer and reproductive harm.