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 5895-01-162-0218
NSN 5925-00-175-9349
NSN 5915-00-141-0410
NSN 6130-00-145-1406
NSN 5895-00-280-7528
NSN 6650-01-084-9726
NSN 2925-01-290-8208
NSN 4140-01-255-4759
NSN 5910-01-378-5701
NSN 6220-00-061-8076
NSN 5996-01-134-7638
NSN 5999-01-649-8811