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 6650-01-611-2795
NSN 6220-01-634-0660
NSN 6320-01-086-2602
NSN 5915-00-089-3274
NSN 6110-00-119-6216
NSN 5996-00-305-6152
NSN 5905-01-186-4524
NSN 5985-01-500-0880
NSN 5985-01-196-6144
NSN 5905-00-975-3142
NSN 5998-01-389-4110
NSN 5925-00-152-9399