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 2925-01-435-9057
NSN 5935-01-275-7593
NSN 6110-01-436-2699
NSN 5965-01-447-6274
NSN 5915-00-997-9432
NSN 5990-01-434-7913
NSN 5965-00-711-6419
NSN 5930-00-704-9786
NSN 5930-01-188-1538
NSN 6150-01-312-4179
NSN 5905-01-049-7327
NSN 5996-00-299-1609