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 5935-01-431-7503
NSN 6110-01-350-3449
NSN 5920-00-991-2262
NSN 6135-00-100-0485
NSN 6110-00-705-5863
NSN 5910-00-068-5735
NSN 7035-01-183-7550
NSN 5915-00-343-6814
NSN 6685-00-942-1794
NSN 5985-00-287-7309
NSN 5950-01-449-1933
NSN 5925-01-386-3178