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 4140-00-413-0877
NSN 5990-01-015-7502
NSN 2925-00-501-6434
NSN 6105-01-328-7446
NSN 6145-00-881-4201
NSN 5996-00-349-8885
NSN 5920-01-552-7728
NSN 6130-00-852-6379
NSN 6220-00-400-5428
NSN 5996-01-328-7454
NSN 6150-00-179-9876
NSN 5990-01-433-7886