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 5985-00-505-4169
NSN 2925-00-311-0825
NSN 6240-00-141-6143
NSN 6130-01-362-0254
NSN 6105-01-047-5951
NSN 5965-00-028-9646
NSN 5935-00-104-8620
NSN 6105-00-382-7670
NSN 2925-01-345-5463
NSN 5935-01-131-2290
NSN 5855-01-003-0848
NSN 5915-01-088-2033