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 6220-01-022-1780
NSN 6150-00-516-4223
NSN 6620-01-422-2775
NSN 5835-01-258-5597
NSN 6150-00-793-7831
NSN 5998-00-811-8880
NSN 5990-01-287-1682
NSN 6105-01-029-3764
NSN 5855-01-356-4024
NSN 6240-01-091-5185
NSN 6685-00-422-6679
NSN 5920-01-419-0741