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 5960-01-552-0862
NSN 5895-00-518-4954
NSN 5945-00-594-5168
NSN 6130-01-074-8970
NSN 6240-00-607-4303
NSN 6130-01-628-4533
NSN 5925-00-081-1005
NSN 5950-01-061-7497
NSN 6620-01-484-4153
NSN 5975-00-993-7465
NSN 6150-01-314-8475
NSN 6130-01-571-8628