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 5905-01-124-4210
NSN 5990-00-399-2454
NSN 5996-01-272-7879
NSN 6320-00-295-2854
NSN 2925-00-102-7701
NSN 5935-01-242-9969
NSN 6240-00-194-7924
NSN 5835-01-386-4027
NSN 5905-00-039-8706
NSN 5930-01-309-9243
NSN 6105-01-416-0997
NSN 6685-01-240-8624