This specification covers basic characteristics required for porous polyimide materials intended for use as instrument and thin section ball bearing retainers (cages), and methods of determining these characteristics.
SAE AMS-P-29609-2001 Referenced Document
ASTM D2240-00 Standard Test Method for Rubber Property8212;Durometer Hardness*, 2024-04-18 Update
ASTM D3951-98 Standard Practice for Commercial Packaging