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 4140-01-184-5191
NSN 6685-01-432-2266
NSN 5935-01-366-7911
NSN 5930-01-329-4854
NSN 6220-01-659-3474
NSN 6130-01-076-1099
NSN 5945-00-823-5945
NSN 5960-01-449-1310
NSN 4140-00-445-3944
NSN 6145-00-099-8986
NSN 5910-01-513-5922
NSN 6105-01-111-0141