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 5998-00-432-1460
NSN 5930-01-629-1723
NSN 5975-00-553-5531
NSN 5985-00-437-3761
NSN 5910-00-568-3761
NSN 5925-01-269-5984
NSN 5945-01-634-0588
NSN 5996-00-508-0383
NSN 5975-00-166-9296
NSN 6685-01-614-8086
NSN 5915-01-495-1923
NSN 5895-00-239-2298