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 2925-01-457-2202
NSN 5935-01-244-7339
NSN 5910-01-214-8952
NSN 5945-01-463-2802
NSN 6130-01-245-7589
NSN 5925-01-281-8076
NSN 6320-00-225-7013
NSN 5920-00-893-4985
NSN 5965-00-006-8004
NSN 6685-00-563-7475
NSN 5965-01-633-8849
NSN 6110-00-288-4179