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 6130-01-445-5878
NSN 5910-01-381-5624
NSN 5910-01-253-4863
NSN 4140-01-534-9987
NSN 5930-00-300-3864
NSN 5998-01-088-6809
NSN 5925-01-510-6291
NSN 6610-00-144-7036
NSN 6105-00-483-6380
NSN 4140-01-491-5544
NSN 4140-01-211-6474
NSN 5920-01-158-4517