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 6620-01-317-4233
NSN 5930-00-037-7157
NSN 6150-00-243-7449
NSN 6685-01-135-2253
NSN 6130-01-572-0217
NSN 6650-01-268-6630
NSN 5905-00-906-6360
NSN 6650-01-371-3551
NSN 5910-01-455-3131
NSN 6610-01-331-6966
NSN 5985-00-264-7556
NSN 5985-01-008-4787