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 6220-01-559-0502
NSN 6130-01-279-1098
NSN 5945-01-058-8228
NSN 4140-00-669-6109
NSN 5915-00-087-7920
NSN 5996-01-258-8873
NSN 5965-01-107-2748
NSN 6650-01-167-5604
NSN 6620-01-412-0938
NSN 5905-01-426-1999
NSN 5975-00-525-9196
NSN 5975-00-054-6321