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 6620-01-466-4436
NSN 4140-01-633-4965
NSN 5930-01-485-4676
NSN 5915-01-366-0031
NSN 6135-01-478-4657
NSN 5895-01-345-5954
NSN 5905-00-703-1902
NSN 6220-01-179-4491
NSN 6145-01-267-9341
NSN 4140-00-602-5973
NSN 5996-01-262-3005
NSN 6105-00-959-5468