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 5905-01-634-0595
NSN 5985-01-084-7311
NSN 6610-00-100-1195
NSN 4140-00-172-1804
NSN 5920-00-636-4713
NSN 6220-01-485-6385
NSN 5935-01-474-3774
NSN 6150-01-578-1033
NSN 5915-01-564-0650
NSN 6105-01-184-2554
NSN 6105-01-422-1835
NSN 5975-01-381-4762