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 6650-01-418-6661
NSN 6620-01-582-2046
NSN 5950-01-245-7780
NSN 5990-00-658-3953
NSN 5985-01-113-5582
NSN 5945-00-927-1759
NSN 6650-00-914-6897
NSN 6645-01-337-8292
NSN 6620-01-502-9104
NSN 5935-01-437-7620
NSN 6240-00-183-0570
NSN 5925-00-736-0425