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 5945-01-031-3006
NSN 5915-00-813-1845
NSN 6240-00-852-4870
NSN 6105-01-353-2526
NSN 7035-00-104-7613
NSN 5930-01-233-2386
NSN 5910-00-865-7701
NSN 6130-01-492-6998
NSN 5905-01-597-1705
NSN 6130-00-166-1332
NSN 5910-00-035-5534
NSN 5990-01-094-7740