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 5990-01-084-8330
NSN 5935-01-381-5709
NSN 6150-00-803-4647
NSN 6220-00-146-3226
NSN 5990-01-461-8969
NSN 6650-00-349-8732
NSN 5895-00-145-2657
NSN 5985-00-584-3795
NSN 5895-00-753-5349
NSN 6130-01-318-9005
NSN 5920-01-020-7659
NSN 6620-01-018-2183