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 5910-00-373-8808
NSN 5990-01-097-4721
NSN 5996-01-244-0222
NSN 4140-00-920-0511
NSN 5915-01-423-8561
NSN 5925-00-132-4305
NSN 5915-00-890-0456
NSN 5999-00-780-7649
NSN 5950-01-111-4234
NSN 7035-00-574-4223
NSN 5945-00-226-1081
NSN 5915-01-252-0244