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 5990-01-246-0936
NSN 2925-01-038-7625
NSN 6220-00-694-6649
NSN 5950-00-275-2842
NSN 5920-01-243-0611
NSN 5915-01-604-9868
NSN 6620-01-384-2105
NSN 6130-01-408-7504
NSN 6685-01-281-2552
NSN 6150-01-550-7551
NSN 6150-00-258-3761
NSN 5975-00-935-5946