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 5965-01-073-9081
NSN 5855-01-546-2810
NSN 5915-01-310-1929
NSN 6110-01-255-7646
NSN 5960-01-485-2467
NSN 5835-00-863-0959
NSN 6650-01-298-4138
NSN 5998-00-448-5910
NSN 5985-00-587-5004
NSN 6130-01-293-1576
NSN 6145-00-011-0336
NSN 2925-01-228-6554