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 5855-01-093-8202
NSN 5915-01-286-7771
NSN 5920-01-206-3977
NSN 5915-01-555-8081
NSN 6620-00-904-2139
NSN 5975-00-647-4968
NSN 5915-00-661-2223
NSN 5990-01-181-4143
NSN 6685-01-314-1785
NSN 5905-01-083-8386
NSN 5920-00-683-7883
NSN 5920-01-602-9241