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 5960-01-525-1690
NSN 5905-00-498-5118
NSN 6220-01-563-4740
NSN 6130-00-473-2270
NSN 5999-01-401-5322
NSN 5915-01-312-1550
NSN 5975-01-437-5297
NSN 6240-01-462-6958
NSN 5905-01-546-4478
NSN 5905-01-446-8177
NSN 5965-00-125-6984
NSN 5930-00-908-5490