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 5990-00-741-9775
NSN 6150-01-599-9637
NSN 6685-01-227-2993
NSN 6145-01-520-9931
NSN 5985-01-204-7382
NSN 6320-00-139-1090
NSN 6130-01-585-6001
NSN 6135-01-407-0594
NSN 5999-01-415-0959
NSN 6150-00-262-4977
NSN 5920-00-349-8837
NSN 5950-01-028-9064