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 5920-01-025-5863
NSN 5855-01-350-2454
NSN 5935-01-437-5360
NSN 6145-01-565-1664
NSN 6110-00-361-6510
NSN 6130-01-165-4615
NSN 5985-01-563-5465
NSN 6220-01-138-1622
NSN 5985-00-153-4205
NSN 4140-01-422-7319
NSN 5985-01-089-9514
NSN 5965-01-241-9865