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 6320-00-422-9006
NSN 5915-01-043-4869
NSN 5920-00-781-7539
NSN 4140-00-593-4985
NSN 5999-00-833-6333
NSN 5915-01-513-0447
NSN 6240-01-519-8781
NSN 6320-01-158-2177
NSN 5935-01-026-0251
NSN 5985-01-496-8946
NSN 5925-01-193-8369
NSN 6240-00-527-8614