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 5985-01-394-3850
NSN 5998-01-609-5968
NSN 5950-00-135-2092
NSN 6135-01-528-6896
NSN 5990-01-199-4832
NSN 6320-01-262-8642
NSN 5985-00-397-0389
NSN 6685-00-556-5392
NSN 6240-01-306-5065
NSN 5910-00-226-2100
NSN 5998-00-186-8185
NSN 5920-01-020-7324