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 5910-01-512-8782
NSN 4140-01-615-5669
NSN 6650-00-891-9850
NSN 5935-00-181-4464
NSN 5925-01-254-9180
NSN 5895-00-833-2525
NSN 5920-00-269-6178
NSN 6220-00-964-1042
NSN 7035-00-179-3924
NSN 5945-01-150-8745
NSN 5905-00-111-3618
NSN 6110-00-331-8472