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 5925-00-553-2500
NSN 6685-01-469-0148
NSN 5835-01-039-9973
NSN 6150-01-046-0247
NSN 5910-01-507-0176
NSN 6320-01-177-3192
NSN 6105-00-248-0110
NSN 5930-00-437-9702
NSN 6110-01-241-1381
NSN 6145-01-654-2195
NSN 5998-00-968-7769
NSN 6610-01-477-6476