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 5945-01-054-3235
NSN 5920-01-017-5438
NSN 4140-00-388-6829
NSN 2925-01-525-8212
NSN 7035-00-337-8745
NSN 5905-01-260-7500
NSN 5990-00-285-1948
NSN 6610-00-122-6625
NSN 5935-01-104-5326
NSN 6220-00-979-0177
NSN 5930-00-104-6148
NSN 6685-01-184-3985