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 5965-00-378-3403
NSN 6135-01-369-9792
NSN 6240-01-263-5343
NSN 5960-01-579-9265
NSN 6150-00-796-6418
NSN 5950-00-170-6457
NSN 6150-00-548-2192
NSN 6220-01-415-3115
NSN 6150-00-901-7264
NSN 5996-01-257-0940
NSN 5905-01-424-4177
NSN 6240-01-438-1157