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 5998-00-184-9495
NSN 6145-01-258-1840
NSN 7035-00-860-9645
NSN 5905-01-442-6616
NSN 6320-01-214-0350
NSN 4140-01-578-8358
NSN 6105-01-058-9918
NSN 5930-01-271-0070
NSN 6220-01-223-2760
NSN 6240-01-063-7685
NSN 5975-01-547-0798
NSN 6685-00-393-6435