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 6685-01-495-3491
NSN 6110-01-261-4980
NSN 5950-01-180-8061
NSN 5960-01-500-6615
NSN 6610-00-364-7543
NSN 6150-01-365-7474
NSN 5920-01-260-2300
NSN 5990-01-574-2522
NSN 6645-00-752-2939
NSN 5835-01-632-6627
NSN 6150-01-514-7370
NSN 5985-00-277-7371