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 6620-01-284-6526
NSN 5895-01-089-5728
NSN 6240-00-968-9274
NSN 4140-01-145-6524
NSN 5985-00-394-0889
NSN 6240-01-197-0489
NSN 6685-01-202-8900
NSN 5945-01-153-9314
NSN 5990-01-337-4584
NSN 6130-01-041-4615
NSN 5965-00-066-7229
NSN 2925-00-261-5800