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 5905-01-453-4040
NSN 5950-01-012-5639
NSN 4140-01-454-7856
NSN 5895-00-922-1209
NSN 5895-01-247-8723
NSN 6105-01-352-6103
NSN 5985-01-089-2027
NSN 5985-00-422-5337
NSN 5965-01-425-5857
NSN 5930-01-491-5088
NSN 5910-01-289-0188
NSN 6685-01-330-7330