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 7035-01-092-8962
NSN 5905-01-138-6262
NSN 5920-01-422-3730
NSN 5915-00-983-4998
NSN 2925-01-026-1000
NSN 6240-00-569-5854
NSN 6145-01-248-7887
NSN 5920-01-461-2158
NSN 6145-00-181-9622
NSN 6105-01-269-1765
NSN 5975-00-187-7728
NSN 4140-01-157-8882