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 5835-00-431-4451
NSN 4140-01-275-1700
NSN 6135-00-234-6508
NSN 6145-01-415-6127
NSN 6110-00-838-0492
NSN 5905-01-379-3368
NSN 6145-00-444-9679
NSN 5930-01-660-1915
NSN 5999-01-327-8215
NSN 6130-01-546-3123
NSN 5930-01-023-7683
NSN 5990-01-510-4699