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 5960-01-495-0859
NSN 5930-00-062-5658
NSN 5996-01-070-7565
NSN 4140-01-545-3482
NSN 6220-01-313-0094
NSN 5920-01-272-8902
NSN 6150-01-620-6310
NSN 5965-00-236-0016
NSN 6320-01-476-0686
NSN 6685-00-204-6037
NSN 5990-01-090-9312
NSN 5999-01-427-3702