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 6130-01-519-8002
NSN 5905-01-415-5116
NSN 6220-01-025-1373
NSN 6110-01-449-1474
NSN 5945-01-652-5596
NSN 6610-01-108-0417
NSN 6240-00-181-2503
NSN 5920-00-513-4546
NSN 5915-01-494-8289
NSN 6240-00-248-6517
NSN 5996-01-032-9136
NSN 6320-00-089-9426