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 6240-01-124-5309
NSN 5855-00-361-0167
NSN 7035-01-218-6960
NSN 5985-01-633-6521
NSN 5920-00-832-6032
NSN 6110-01-260-9130
NSN 6145-01-520-9931
NSN 5905-00-067-0066
NSN 6130-01-659-8607
NSN 5998-01-634-0604
NSN 5996-01-494-4122
NSN 6240-01-382-0453