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 7035-01-076-9621
NSN 5920-00-155-2173
NSN 5999-00-553-6335
NSN 5935-01-609-8821
NSN 6135-00-906-0984
NSN 2925-00-275-1807
NSN 5895-01-469-3352
NSN 5945-01-534-9923
NSN 5935-00-009-3018
NSN 5915-00-099-0347
NSN 5905-00-408-0879
NSN 6620-01-408-4464