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 5965-00-147-3070
NSN 6650-01-100-3185
NSN 6685-00-932-4258
NSN 2925-01-063-7876
NSN 6130-00-769-6646
NSN 5935-00-865-3013
NSN 6105-01-419-3064
NSN 6110-00-920-6292
NSN 5950-01-365-2334
NSN 5915-00-053-2003
NSN 5975-01-068-6027
NSN 6650-01-549-4383