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 5925-01-018-1375
NSN 6150-01-050-7528
NSN 6240-01-644-5022
NSN 6240-01-076-5231
NSN 6320-00-456-0836
NSN 5920-00-840-5428
NSN 5965-00-175-8972
NSN 5895-01-538-5911
NSN 5855-01-122-9418
NSN 5945-00-658-3468
NSN 6650-01-068-3997
NSN 7035-01-076-4067