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 6150-00-320-6212
NSN 6685-00-229-7350
NSN 5930-00-175-1167
NSN 7035-00-173-2281
NSN 5905-00-341-1054
NSN 6105-01-158-2232
NSN 5920-01-552-2642
NSN 5985-01-101-0901
NSN 5930-01-524-5234
NSN 4140-01-117-5698
NSN 4140-01-145-4474
NSN 5975-00-518-1733