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 6220-01-306-8448
NSN 6150-01-043-6361
NSN 5905-00-277-7439
NSN 7035-01-254-3606
NSN 6110-00-421-1650
NSN 5905-00-825-6971
NSN 6105-01-327-3174
NSN 5895-01-167-2970
NSN 2925-01-407-4958
NSN 5915-01-601-0047
NSN 5935-00-993-2752
NSN 5996-01-453-6926