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 5935-00-764-9379
NSN 2925-01-198-7528
NSN 5950-01-310-7321
NSN 5965-00-989-9345
NSN 6150-00-596-8766
NSN 5960-01-167-8796
NSN 5960-00-933-9181
NSN 2925-01-437-9041
NSN 6145-01-657-3777
NSN 6240-01-377-5503
NSN 5999-01-413-2006
NSN 5998-01-077-6762