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 6650-00-407-5883
NSN 5996-01-384-9934
NSN 6685-01-306-4747
NSN 6145-00-104-7789
NSN 6135-01-611-8483
NSN 5975-00-752-4926
NSN 5895-01-467-9139
NSN 5945-01-369-7358
NSN 5920-01-023-6818
NSN 5996-01-123-9038
NSN 6650-01-209-6318
NSN 5945-01-426-4012