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 4140-00-884-7780
NSN 6645-01-633-1852
NSN 6130-01-153-2265
NSN 5985-01-063-3641
NSN 5925-00-872-6522
NSN 5855-00-941-3037
NSN 5905-01-468-6390
NSN 5965-01-154-6319
NSN 6650-00-267-9815
NSN 5855-00-761-6559
NSN 5915-01-227-5746
NSN 6685-01-578-8790