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 5999-00-865-7491
NSN 5915-01-218-8924
NSN 5915-01-288-5929
NSN 6650-00-554-1457
NSN 5960-01-111-5142
NSN 5965-01-078-1312
NSN 6620-01-458-8074
NSN 7035-00-507-5380
NSN 6320-01-476-7702
NSN 6610-00-116-1390
NSN 6150-01-205-0192
NSN 6240-00-445-4765