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 5905-00-761-8719
NSN 5990-00-036-6449
NSN 6220-01-064-4165
NSN 6130-01-545-8378
NSN 5935-01-332-5744
NSN 5835-01-368-4015
NSN 5945-00-786-4966
NSN 7035-01-243-8523
NSN 6110-01-493-4402
NSN 5920-01-651-6179
NSN 5985-01-515-6266
NSN 5975-01-448-4536