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 5985-01-534-9114
NSN 6220-01-440-5443
NSN 4140-00-334-4762
NSN 6135-00-112-8637
NSN 6320-01-215-2284
NSN 5975-00-145-7286
NSN 6110-01-579-5928
NSN 5985-01-378-6823
NSN 6150-01-501-5734
NSN 6130-01-482-3518
NSN 5925-00-945-9955
NSN 6105-01-220-4762