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 6105-01-296-5012
NSN 6240-01-306-6109
NSN 6145-00-224-5245
NSN 5925-01-160-0069
NSN 5910-01-124-0955
NSN 5998-01-409-1174
NSN 4140-01-421-1132
NSN 6130-00-873-2995
NSN 7035-01-253-7253
NSN 5835-01-439-0180
NSN 5965-01-533-7687
NSN 5915-01-454-7196