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 6105-00-732-9430
NSN 6240-01-554-2229
NSN 6650-01-656-0491
NSN 6110-01-352-8631
NSN 5965-00-892-3665
NSN 6135-00-505-0679
NSN 5965-01-650-5785
NSN 5855-00-631-4565
NSN 5855-00-586-6255
NSN 6320-01-090-8296
NSN 5915-00-822-1290
NSN 5985-00-455-0112