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 5985-01-547-7348
NSN 5975-00-286-8506
NSN 6610-01-074-2883
NSN 5920-01-233-8373
NSN 5998-00-949-4470
NSN 5985-00-169-9030
NSN 5915-01-143-0937
NSN 6650-01-461-8283
NSN 6610-00-146-7028
NSN 5855-01-501-5683
NSN 6685-00-901-1225
NSN 5915-01-034-7006