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 6150-01-352-3227
NSN 5920-01-430-2530
NSN 5985-01-191-2233
NSN 5950-01-178-0902
NSN 6645-01-485-6536
NSN 6610-00-191-5317
NSN 5960-01-014-3876
NSN 6130-01-122-8343
NSN 5950-01-658-7180
NSN 5920-00-925-2639
NSN 5996-00-275-1651
NSN 6650-00-115-6654