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 5965-00-822-8549
NSN 5905-01-390-4298
NSN 6105-00-643-4975
NSN 5965-00-849-1313
NSN 6150-01-502-2075
NSN 4140-01-445-8202
NSN 6240-00-411-8499
NSN 5925-00-170-4090
NSN 6130-01-293-0248
NSN 6620-00-714-6966
NSN 4140-01-353-9043
NSN 6135-00-451-0709