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 6620-00-469-4571
NSN 5935-00-597-2862
NSN 7035-01-278-1379
NSN 6620-01-652-4349
NSN 6145-00-657-4755
NSN 6220-00-682-8292
NSN 6320-01-202-8761
NSN 5960-01-399-4327
NSN 5999-01-480-1314
NSN 5930-01-304-9929
NSN 5930-01-432-9542
NSN 6610-01-351-0072