A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6135-00-803-3012
NSN 6145-01-425-9981
NSN 5975-01-093-9541
NSN 6685-00-935-6961
NSN 5855-00-149-0766
NSN 6150-00-358-0646
NSN 5910-00-509-1158
NSN 5975-01-256-0926
NSN 5835-01-632-6627
NSN 6220-00-563-7782
NSN 5915-00-432-6333
NSN 5960-00-502-4896