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 5835-01-439-0180
NSN 6220-01-205-3624
NSN 5975-01-077-5525
NSN 6685-01-188-0302
NSN 6610-00-336-2404
NSN 5985-00-884-0742
NSN 6650-00-011-3435
NSN 5996-00-651-7300
NSN 6220-00-113-6034
NSN 5920-01-334-0876
NSN 5945-01-441-6458
NSN 6610-01-314-3659