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 5835-01-385-0579
NSN 5950-01-579-4485
NSN 5975-01-657-7339
NSN 5950-01-347-0312
NSN 6105-01-607-6572
NSN 2925-01-510-2221
NSN 5996-01-167-8914
NSN 6650-00-983-6722
NSN 6320-00-284-1524
NSN 6130-01-400-6123
NSN 5990-01-527-7640
NSN 5960-01-543-0235