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 6130-01-168-9768
NSN 6650-01-463-8405
NSN 5985-01-660-9670
NSN 5996-00-109-8172
NSN 6320-00-506-2314
NSN 6135-01-597-7685
NSN 6240-00-900-7674
NSN 5925-00-295-6255
NSN 5950-01-534-4322
NSN 6685-00-732-1927
NSN 5998-00-032-1213
NSN 4140-01-086-0067