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 6220-00-696-1519
NSN 5910-00-550-1918
NSN 6145-00-842-4147
NSN 6135-01-577-5532
NSN 6620-01-652-4349
NSN 6685-01-265-7228
NSN 5905-01-456-6615
NSN 5915-01-586-0890
NSN 6610-01-112-0447
NSN 6150-01-502-8837
NSN 6320-01-233-5798
NSN 5920-00-112-4341