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 5950-01-214-5717
NSN 5996-01-409-1020
NSN 6150-01-469-7562
NSN 6145-01-235-0761
NSN 6650-01-127-3268
NSN 5965-01-331-6378
NSN 5965-01-337-1217
NSN 5999-00-328-0749
NSN 7035-01-630-3552
NSN 6105-00-915-5683
NSN 5920-01-440-5629
NSN 6320-01-021-6633