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 5996-01-564-2666
NSN 5930-01-362-0430
NSN 5945-00-900-1897
NSN 5975-01-515-2053
NSN 5998-01-454-9992
NSN 5950-00-443-5085
NSN 5999-01-172-3767
NSN 5990-01-390-2177
NSN 5925-01-330-9216
NSN 5965-01-651-5937
NSN 5935-00-255-6550
NSN 5855-01-421-7691