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 5965-01-321-3744
NSN 5999-00-233-4280
NSN 6645-00-664-4665
NSN 5855-01-559-8429
NSN 5835-00-868-8815
NSN 5855-00-411-8688
NSN 6220-01-622-4742
NSN 5895-00-492-1431
NSN 6240-00-212-4305
NSN 6130-00-153-3136
NSN 6220-00-379-4044
NSN 5905-00-127-3494