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 6320-01-618-7800
NSN 5925-01-203-2084
NSN 6150-01-634-0575
NSN 5960-00-968-7582
NSN 5998-01-543-6984
NSN 5975-01-500-1307
NSN 5950-00-852-0314
NSN 5910-00-850-7531
NSN 5855-01-299-3510
NSN 6220-01-147-4652
NSN 6650-01-356-3123
NSN 5998-01-068-5398