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 5996-01-215-2769
NSN 6130-00-959-4181
NSN 6110-00-325-4519
NSN 6645-01-495-5553
NSN 7035-00-153-3826
NSN 6240-00-712-3885
NSN 5985-01-580-0566
NSN 6150-00-350-3073
NSN 2925-01-563-7885
NSN 4140-00-977-6297
NSN 5895-01-018-4919
NSN 6105-01-506-9130