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 6320-01-631-7828
NSN 5960-01-130-4992
NSN 2925-00-592-2819
NSN 5930-00-153-1400
NSN 5920-01-067-2944
NSN 5910-01-134-0737
NSN 6145-01-643-7807
NSN 6105-01-264-3079
NSN 5999-01-477-3275
NSN 6645-01-350-3138
NSN 6610-00-585-6227
NSN 5950-01-211-8098