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 5930-00-238-0807
NSN 5950-01-212-2838
NSN 5915-00-582-1499
NSN 5835-00-957-3565
NSN 5965-01-514-7231
NSN 5945-01-484-0935
NSN 5950-01-417-5599
NSN 5965-00-177-2932
NSN 5925-01-219-7227
NSN 5996-00-382-9296
NSN 5990-00-864-9690
NSN 6645-01-641-4998