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 6685-01-553-9112
NSN 5905-01-634-0595
NSN 5960-00-173-6988
NSN 2925-01-283-3576
NSN 5930-01-098-0400
NSN 5985-01-040-0903
NSN 5985-01-336-9127
NSN 5915-01-588-7847
NSN 5990-00-296-1092
NSN 5998-00-920-4340
NSN 6145-00-275-0811
NSN 6130-01-443-4061