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 5855-01-003-7102
NSN 5965-01-189-4805
NSN 5910-00-868-1754
NSN 6620-00-041-3406
NSN 6645-00-850-6486
NSN 4140-00-887-6787
NSN 6110-01-369-7651
NSN 6240-00-197-6819
NSN 5905-01-416-9419
NSN 6650-01-559-3861
NSN 7035-01-238-9301
NSN 6320-00-456-2092