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 6320-01-611-4918
NSN 6105-01-433-4232
NSN 6130-01-317-3170
NSN 6135-00-945-0015
NSN 6105-01-310-8468
NSN 5960-01-632-6576
NSN 5930-00-061-2008
NSN 6685-00-360-4305
NSN 5998-00-864-4881
NSN 5960-01-170-4057
NSN 6110-00-596-9124
NSN 5925-00-001-1277