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 6650-00-279-5741
NSN 5835-01-519-3834
NSN 6650-00-590-9073
NSN 6145-01-068-4668
NSN 5950-01-129-3478
NSN 6110-01-243-5026
NSN 5965-01-629-0975
NSN 5905-00-551-4242
NSN 5945-00-423-7135
NSN 5910-00-509-9973
NSN 5935-01-173-7787
NSN 5990-01-426-7350