Gamma radiation affects polymers by either breaking the intermolecular bonds (which promotes embrittlement) or increasing the degree of cross linking (which increases compression set). Both of these reactions occur simultaneously, with one being predominant, depending on the elastomer and additives used. Additionally, radiation may affect physical properties such as tensile strength, elongation and discoloration of certain elastomers.

Best Choices

Due to low levels of radiation used in sterilization, Silicone, peroxide cured EP, or Viton™ can be used.