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 6135-01-487-6275
NSN 5905-00-930-8643
NSN 5920-01-163-0551
NSN 4140-00-760-5594
NSN 5920-01-519-8106
NSN 6650-01-542-7101
NSN 2925-01-364-7926
NSN 5998-00-908-5010
NSN 6685-01-494-6163
NSN 5835-01-339-0542
NSN 6685-01-560-1881
NSN 5945-01-500-1904