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 5945-00-350-9304
NSN 6135-00-477-8847
NSN 6610-01-196-6388
NSN 5905-01-575-2953
NSN 7035-01-099-9163
NSN 5996-01-454-6938
NSN 5855-00-304-7163
NSN 5999-01-415-0265
NSN 5925-01-557-9007
NSN 5996-00-081-3175
NSN 6150-01-540-1563
NSN 5930-01-055-5525