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 5950-01-297-2454
NSN 5945-01-054-3722
NSN 5950-01-335-6578
NSN 5965-00-913-9545
NSN 6130-01-604-3392
NSN 6320-01-512-2031
NSN 5965-01-335-6630
NSN 5905-01-430-3500
NSN 5960-01-387-3573
NSN 6150-01-149-5226
NSN 6110-00-910-2756
NSN 5996-00-500-7328