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 5930-01-163-7572
NSN 6150-01-072-5818
NSN 5998-01-294-3787
NSN 5925-01-303-0932
NSN 5905-00-196-6672
NSN 5950-01-613-2547
NSN 6620-01-446-4797
NSN 5925-01-258-4640
NSN 6320-01-320-3305
NSN 6240-00-068-5543
NSN 5905-01-249-5836
NSN 6645-01-083-4759