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 6320-01-359-3921
NSN 5915-01-325-9426
NSN 6240-00-001-5353
NSN 5835-01-100-3265
NSN 5925-00-706-9975
NSN 5935-00-827-5672
NSN 6135-01-450-1269
NSN 6130-01-206-1048
NSN 6620-01-043-6424
NSN 6130-01-023-3430
NSN 6685-01-408-5086
NSN 6130-00-186-0737