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 5910-01-632-7560
NSN 5930-01-329-1046
NSN 5965-01-643-1951
NSN 5945-00-169-9695
NSN 5855-01-240-4958
NSN 5965-00-679-9501
NSN 6150-01-450-9608
NSN 5985-01-362-1756
NSN 6145-01-629-4079
NSN 6110-01-514-7608
NSN 6685-00-217-9010
NSN 6610-00-641-3015