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 5910-00-608-4544
NSN 5996-01-421-2416
NSN 6145-00-917-9617
NSN 5999-00-248-9139
NSN 6130-01-389-9547
NSN 5895-01-519-5607
NSN 5965-01-540-3027
NSN 5935-01-241-9864
NSN 6645-00-819-5045
NSN 6685-01-020-8756
NSN 5999-01-059-6611
NSN 6150-00-901-2888