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 5915-00-904-3317
NSN 6240-01-495-1912
NSN 6105-01-350-4890
NSN 6320-01-612-7035
NSN 5925-00-500-9664
NSN 5910-01-319-0399
NSN 6685-00-517-7132
NSN 6685-00-852-8434
NSN 5996-00-186-8709
NSN 5930-00-463-7449
NSN 6685-01-158-2911
NSN 6650-01-416-0473