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 5910-01-393-6052
NSN 6685-01-154-3105
NSN 5930-00-628-8435
NSN 6685-01-368-0419
NSN 6135-00-947-0406
NSN 6650-00-375-6632
NSN 5930-01-603-0488
NSN 6105-01-166-4923
NSN 6610-01-152-1463
NSN 6150-01-599-6850
NSN 5925-01-469-6667
NSN 6130-01-487-8699