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 6620-01-280-9478
NSN 5835-01-285-1897
NSN 6135-00-110-1981
NSN 5910-01-445-4678
NSN 5855-00-247-7219
NSN 4140-01-311-0076
NSN 5855-01-114-3513
NSN 2925-01-038-7625
NSN 6645-01-283-3181
NSN 7035-01-340-3272
NSN 5915-00-774-8418
NSN 5999-01-313-1628