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 6610-01-633-8931
NSN 5998-01-322-5957
NSN 6220-01-231-9813
NSN 6130-01-268-3104
NSN 5835-01-267-3388
NSN 6650-01-437-8852
NSN 5915-01-229-0313
NSN 5925-01-092-1005
NSN 6645-01-184-0725
NSN 5920-00-208-4891
NSN 5975-00-166-5800
NSN 5920-00-190-7466