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 5999-00-459-4866
NSN 5998-00-209-5425
NSN 5925-01-406-3490
NSN 5855-00-908-9314
NSN 5835-01-524-2742
NSN 5999-01-487-5049
NSN 5835-00-841-2650
NSN 5915-00-899-9890
NSN 5960-01-399-4327
NSN 5985-00-569-7444
NSN 5998-00-400-4211
NSN 6685-00-314-4566