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 5965-00-578-8931
NSN 5930-00-905-7589
NSN 6150-01-154-0258
NSN 6645-01-489-0455
NSN 4140-00-393-1707
NSN 6105-01-452-1020
NSN 6150-01-029-4632
NSN 6105-00-516-2151
NSN 6145-01-143-7498
NSN 6145-01-281-7222
NSN 6145-01-030-8518
NSN 6220-00-313-4386