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 5835-00-311-5491
NSN 5975-00-200-2002
NSN 5905-00-054-6855
NSN 5895-01-590-3318
NSN 2925-00-925-0545
NSN 6145-01-254-4006
NSN 5945-00-987-5384
NSN 5910-00-115-2008
NSN 5999-00-847-1541
NSN 5930-00-584-4563
NSN 5990-00-559-1822
NSN 5920-01-072-5179