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 5920-00-156-4482
NSN 5895-01-217-7983
NSN 2925-00-436-9837
NSN 5975-01-077-4211
NSN 5935-01-063-3874
NSN 5925-01-485-3595
NSN 5835-00-993-7957
NSN 6685-01-314-7140
NSN 6110-01-570-0022
NSN 5985-00-256-9113
NSN 6145-00-789-7736
NSN 6105-01-647-0455