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 6145-01-391-5518
NSN 2925-01-345-9439
NSN 5935-00-025-8025
NSN 6130-01-091-7767
NSN 5945-00-900-7284
NSN 5895-00-248-7477
NSN 6110-01-224-6409
NSN 5965-01-107-4078
NSN 5996-01-270-5095
NSN 5905-01-088-1056
NSN 6320-01-029-4220
NSN 5990-01-324-7529