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 6145-00-567-3255
NSN 4140-00-751-1694
NSN 5960-01-387-3573
NSN 6320-00-845-3261
NSN 5998-01-317-0761
NSN 6220-01-246-4285
NSN 6320-01-429-9871
NSN 5960-01-364-1318
NSN 5925-01-016-8102
NSN 7035-00-541-8516
NSN 6220-01-171-6976
NSN 6240-01-272-2692