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 6240-00-538-1416
NSN 6145-01-110-4218
NSN 5915-01-082-1466
NSN 6135-01-226-4071
NSN 5965-00-856-0552
NSN 6685-01-461-3560
NSN 6130-01-583-6728
NSN 6220-00-065-3431
NSN 6150-01-443-3139
NSN 5925-00-597-1558
NSN 6685-01-180-0261
NSN 5996-01-365-0781