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 6685-01-165-5048
NSN 6220-01-420-6512
NSN 5920-01-501-5961
NSN 7035-00-946-2642
NSN 6320-01-366-5157
NSN 5950-01-485-0246
NSN 6110-00-802-6858
NSN 5985-00-802-7658
NSN 6320-01-259-2604
NSN 5996-01-551-3895
NSN 5965-00-421-6459
NSN 5835-01-332-2867