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 6135-00-877-1659
NSN 6620-00-246-5159
NSN 5915-00-118-8054
NSN 6220-00-911-7313
NSN 5835-00-933-9609
NSN 5905-01-413-9200
NSN 5855-00-532-0025
NSN 5960-00-231-3171
NSN 5920-01-503-1245
NSN 6620-00-145-3010
NSN 6145-01-476-5451
NSN 6240-00-538-8547