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 6650-01-222-1749
NSN 6240-00-080-2012
NSN 5905-01-555-6495
NSN 5965-01-354-8442
NSN 6240-01-450-9269
NSN 5905-01-301-8205
NSN 5905-01-505-3860
NSN 5985-01-604-8923
NSN 5998-00-896-2980
NSN 5985-01-619-6709
NSN 5999-00-132-2720
NSN 6240-01-206-4809