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 2925-01-507-7877
NSN 5945-01-227-1820
NSN 6145-00-887-6395
NSN 5960-01-495-0859
NSN 6650-01-145-5173
NSN 6240-01-659-8546
NSN 6110-00-202-2990
NSN 6320-01-078-8257
NSN 5895-01-383-8442
NSN 5920-01-512-0713
NSN 6105-01-312-1481
NSN 5925-00-228-4048