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 5990-01-019-6609
NSN 5935-01-381-2686
NSN 5996-01-628-0425
NSN 5975-01-505-8239
NSN 5905-01-480-7590
NSN 5910-00-901-1563
NSN 5895-01-107-3842
NSN 7035-00-193-2269
NSN 6610-00-626-8523
NSN 2925-00-233-5644
NSN 5960-01-216-7004
NSN 6135-01-537-1234