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 5985-01-413-5653
NSN 5945-00-511-6475
NSN 5920-00-105-3713
NSN 6645-01-451-0260
NSN 5910-00-350-3539
NSN 6110-01-493-2949
NSN 6220-00-073-7330
NSN 5925-00-225-1831
NSN 6685-01-028-9442
NSN 5999-01-133-2063
NSN 5915-00-043-1394
NSN 6645-01-590-5534