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 5835-00-920-7325
NSN 5915-00-823-8334
NSN 5855-00-688-9954
NSN 5925-01-529-9825
NSN 2925-01-364-7926
NSN 6650-00-224-3223
NSN 5910-00-170-5192
NSN 5945-00-344-9615
NSN 5960-01-242-9801
NSN 5910-01-383-4894
NSN 5950-01-027-1459
NSN 5950-00-251-2310