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 5930-01-183-6411
NSN 6240-01-088-7629
NSN 5905-01-542-2936
NSN 5960-00-499-6781
NSN 5985-01-519-6501
NSN 6105-00-707-5962
NSN 5996-01-181-5438
NSN 5915-00-556-1830
NSN 6320-01-195-5583
NSN 2925-01-492-2589
NSN 6145-00-134-7271
NSN 5999-00-551-9434