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 6135-00-107-6662
NSN 5925-00-432-0546
NSN 5960-01-436-4493
NSN 4140-01-545-0270
NSN 7035-01-520-7243
NSN 6650-01-051-2021
NSN 6130-01-413-5943
NSN 6110-00-090-3690
NSN 5935-00-982-8252
NSN 6110-01-195-7628
NSN 5915-00-994-7730
NSN 4140-00-660-8699