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 6645-01-188-2918
NSN 5960-01-389-9941
NSN 5835-01-457-7951
NSN 2925-01-231-6312
NSN 5910-01-151-8338
NSN 5915-01-450-4240
NSN 5965-01-415-2898
NSN 5930-01-378-6976
NSN 5905-01-141-6244
NSN 5965-01-315-5764
NSN 4140-00-054-6467
NSN 5835-01-235-1125