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 5999-00-952-5000
NSN 6220-01-645-7770
NSN 5915-00-983-7366
NSN 5915-01-532-5542
NSN 6320-01-431-4359
NSN 6685-00-027-7186
NSN 6620-00-485-0542
NSN 6645-00-664-4665
NSN 5945-01-247-3894
NSN 5835-00-092-1136
NSN 5965-01-526-8967
NSN 6135-01-175-7311