Purpose This API standard specifies requirements for the qualification of manufacturers of polymeric seals used in the petroleum and natural gas industries. Applicability This standard is applicable to the manufacturers of polymeric seals where API product standards require such services or are otherwise specified as a requirement for compliance. Compliance with this standard is not required to demonstrate compliance with any other API standard or specification. This standard does not consider entities that solely perform assembly of outside manufactured parts as a polymeric seal manufacturer. NOTE This standard does not limit the responsibility of any manufacturer of commercial products utilizing polymeric seals and manufactured to an API standard from its responsibility for compliance with all applicable requirements of that API standard.