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 5905-00-721-1837
NSN 6620-00-663-8962
NSN 4140-00-974-5055
NSN 5975-00-381-7186
NSN 6240-01-575-5049
NSN 5998-01-023-1270
NSN 6610-01-117-5000
NSN 5930-01-415-0873
NSN 5990-01-476-0722
NSN 4140-01-174-0646
NSN 5855-00-436-3852
NSN 5930-01-214-0945