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 6240-00-265-6538
NSN 6110-01-633-9660
NSN 6650-01-092-4525
NSN 5965-00-156-8562
NSN 6130-00-482-5421
NSN 5905-01-464-5356
NSN 5990-01-472-2447
NSN 2925-01-629-9416
NSN 6650-01-191-6862
NSN 5910-01-036-5152
NSN 5835-01-038-2402
NSN 5960-01-481-8051