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 5835-00-160-7142
NSN 5950-01-654-0634
NSN 2925-01-361-5310
NSN 6620-00-043-6082
NSN 5945-01-065-0887
NSN 5930-01-542-7294
NSN 5910-01-313-2456
NSN 6145-01-283-9331
NSN 5855-01-535-7127
NSN 5835-00-830-6416
NSN 5925-01-143-1657
NSN 5930-00-850-7284