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 6130-01-421-2216
NSN 6105-01-595-5868
NSN 5935-01-244-1836
NSN 6150-01-085-6574
NSN 5996-01-369-6808
NSN 6130-01-235-6049
NSN 5960-01-447-7074
NSN 6220-01-474-5682
NSN 5985-01-658-8131
NSN 5905-01-442-3473
NSN 6240-00-560-5426
NSN 4140-00-101-7903