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 7035-00-200-5162
NSN 5960-00-874-4857
NSN 6130-00-391-8733
NSN 6145-01-520-3631
NSN 5905-01-420-6202
NSN 5895-01-633-0347
NSN 5990-01-633-9503
NSN 5855-01-224-7975
NSN 5985-01-454-7123
NSN 5935-01-353-0385
NSN 6145-01-003-9741
NSN 6150-01-524-7176