(a) This subpart contains performance requirements, acceptance tests, and production testing and inspection requirements for polyethylene foam used in the construction of personal flotation devices (PFDs) approved under part 160 of this subchapter. Manufacturers shall also comply with the requirements of subpart 164.019 of this chapter.

(b) All polyethylene foams accepted under this subpart are non-standard components. Acceptance of polyethylene foam prior to being incorporated into finished PFDs, or during the course of manufacture, shall in no case be construed as a guarantee of the acceptance of the finished PFD.