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 6130-00-946-2607
NSN 6150-00-888-4272
NSN 6105-01-242-7969
NSN 5905-01-375-7627
NSN 6620-01-230-8064
NSN 6610-01-412-5776
NSN 6145-01-441-4239
NSN 6620-01-061-3497
NSN 6645-01-352-6583
NSN 5960-00-421-7560
NSN 5835-00-632-8621
NSN 5910-01-396-2759