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 5945-01-559-4505
NSN 5965-01-148-4979
NSN 6650-01-511-9397
NSN 5996-00-188-7063
NSN 5945-01-587-9339
NSN 6150-01-348-7455
NSN 6145-01-332-4553
NSN 6105-00-160-7804
NSN 6320-01-438-6280
NSN 6650-00-012-2430
NSN 5925-00-361-8533
NSN 5950-01-411-6196