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 6220-00-699-8105
NSN 6150-01-576-9068
NSN 6645-01-622-1830
NSN 7035-01-444-4240
NSN 6240-01-266-3655
NSN 5996-01-641-1712
NSN 5975-00-563-4572
NSN 5999-00-383-8424
NSN 5835-00-256-5558
NSN 5965-00-185-9687
NSN 2925-00-149-0760
NSN 6320-00-149-7570