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 5835-00-907-4390
NSN 6650-00-142-6147
NSN 6220-01-126-1909
NSN 5975-01-141-6531
NSN 5975-01-023-1592
NSN 5920-00-904-3727
NSN 5925-01-320-2767
NSN 5855-01-464-3152
NSN 4140-01-469-0506
NSN 5925-01-559-6023
NSN 6135-01-491-9360
NSN 5910-00-578-5908