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 6685-00-227-0212
NSN 6130-00-519-6192
NSN 5915-01-330-7250
NSN 5895-01-573-1025
NSN 6110-00-578-7243
NSN 5999-01-572-9661
NSN 7035-00-361-5975
NSN 4140-01-144-3751
NSN 6320-01-466-4175
NSN 2925-00-188-5003
NSN 5935-01-078-6470
NSN 5910-01-399-5499