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 6650-01-230-5155
NSN 6150-01-629-1678
NSN 5925-00-657-0294
NSN 6610-00-908-8489
NSN 6620-01-610-5081
NSN 6685-01-567-9425
NSN 5990-01-497-2138
NSN 5999-01-156-5803
NSN 5895-00-108-8474
NSN 5910-01-627-7519
NSN 6105-01-294-2582
NSN 6685-01-020-7235