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 5925-01-634-0664
NSN 6110-01-649-1302
NSN 5915-01-627-3235
NSN 6645-00-147-5982
NSN 6220-00-495-1203
NSN 2925-01-236-3547
NSN 5920-00-826-9035
NSN 6650-01-428-9958
NSN 5930-00-437-6487
NSN 6650-00-824-0745
NSN 5975-01-641-5306
NSN 5945-00-159-1567