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 5985-01-035-6912
NSN 5950-00-218-1362
NSN 5965-01-116-5339
NSN 6150-01-524-9097
NSN 5965-01-073-4758
NSN 7035-01-487-6481
NSN 6650-00-966-5205
NSN 6650-01-248-2591
NSN 4140-01-291-6917
NSN 5960-00-382-6012
NSN 5895-00-290-6501
NSN 6220-00-400-5428