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 5960-01-583-4737
NSN 6320-00-908-6841
NSN 5950-00-484-3149
NSN 5915-01-005-0164
NSN 4140-01-098-4677
NSN 6650-01-654-4927
NSN 6645-01-421-6909
NSN 5920-00-814-0763
NSN 6240-01-126-6816
NSN 6220-00-689-8114
NSN 5990-01-503-0194
NSN 5965-01-449-2794