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 5999-00-301-4823
NSN 4140-00-585-0645
NSN 5996-01-447-1418
NSN 5905-01-424-3146
NSN 5925-00-547-7739
NSN 6130-00-153-3136
NSN 7035-01-533-3916
NSN 6145-01-127-1622
NSN 6105-01-381-0411
NSN 2925-00-078-0525
NSN 7035-01-391-9858
NSN 5965-01-424-0542