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 5935-00-540-3092
NSN 6620-01-446-2258
NSN 5998-01-465-9500
NSN 5835-01-081-6864
NSN 5999-01-391-4996
NSN 2925-00-371-0364
NSN 6650-00-304-6987
NSN 6320-00-500-4172
NSN 6650-01-298-4138
NSN 6150-00-272-7949
NSN 6105-01-622-2621
NSN 6685-00-988-7053