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 6240-00-009-4117
NSN 5965-01-474-5654
NSN 6650-01-112-0453
NSN 6110-01-152-1097
NSN 5920-00-809-0972
NSN 5990-01-599-7106
NSN 5960-00-161-3728
NSN 6650-01-604-9315
NSN 5895-01-012-1920
NSN 5960-00-296-4475
NSN 5960-00-231-3767
NSN 5920-00-237-0995