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 5920-01-573-7227
NSN 6610-00-302-6169
NSN 6645-01-348-8146
NSN 6610-01-232-4802
NSN 5965-01-497-5961
NSN 5935-01-206-4968
NSN 5990-01-386-5561
NSN 5925-01-310-2076
NSN 5965-01-188-7267
NSN 6105-00-516-2151
NSN 5985-00-046-1877
NSN 6130-01-327-7917