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 6240-00-411-1140
NSN 6130-01-400-6123
NSN 5996-01-394-0095
NSN 5915-00-503-9797
NSN 5945-00-188-6464
NSN 6130-00-528-7838
NSN 6240-01-050-8306
NSN 5999-01-025-6686
NSN 4140-00-478-2012
NSN 5915-01-630-7088
NSN 6685-00-423-7316
NSN 5996-01-651-7581