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 5920-00-417-8768
NSN 6620-01-471-8128
NSN 5985-00-932-5333
NSN 6650-01-143-4586
NSN 6240-01-130-7854
NSN 6150-01-609-0011
NSN 6610-01-447-2560
NSN 5930-01-433-2775
NSN 5925-01-398-8244
NSN 5920-00-931-0752
NSN 5999-01-450-1088
NSN 5835-01-060-3243