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 7035-00-495-2137
NSN 6220-01-073-7222
NSN 5910-00-908-0768
NSN 5910-01-031-0457
NSN 5835-01-034-1255
NSN 6320-00-089-9426
NSN 6620-01-561-9171
NSN 5935-01-370-1933
NSN 6650-01-510-4778
NSN 4140-01-554-5494
NSN 6110-01-346-0028
NSN 5945-01-413-4318