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 6645-01-357-7750
NSN 6610-00-471-2745
NSN 5985-00-317-8237
NSN 6240-00-247-7358
NSN 5945-00-281-4578
NSN 7035-00-782-7046
NSN 5915-01-449-2994
NSN 5835-01-158-6878
NSN 6320-01-029-4220
NSN 5905-00-660-4460
NSN 5915-00-208-4686
NSN 5950-01-559-3299