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 5999-00-111-6090
NSN 2925-01-199-7394
NSN 6150-00-401-3093
NSN 5985-01-046-1115
NSN 5930-00-914-7855
NSN 5965-01-130-1965
NSN 5925-00-395-3566
NSN 6135-01-247-5660
NSN 5920-00-066-0221
NSN 5945-01-450-7020
NSN 5855-00-466-2309
NSN 5935-01-565-6662