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 6650-00-527-8822
NSN 6645-00-363-9775
NSN 6620-00-273-8735
NSN 4140-00-296-9695
NSN 6110-00-823-2365
NSN 5975-01-640-9937
NSN 6645-01-627-6629
NSN 5925-00-188-8678
NSN 5920-00-922-8493
NSN 5910-01-412-0709
NSN 6145-00-290-3859
NSN 6110-01-337-3232