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 6685-01-240-2360
NSN 5985-01-164-5299
NSN 5950-01-484-7845
NSN 6650-00-262-2324
NSN 2925-01-208-6638
NSN 5975-01-441-9221
NSN 5910-01-401-5279
NSN 5905-00-106-8274
NSN 5960-01-074-2557
NSN 6685-01-506-0565
NSN 5996-01-092-4138
NSN 6650-01-381-6768