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 6620-00-477-0654
NSN 5905-01-414-2128
NSN 5996-01-362-4234
NSN 5960-00-078-4173
NSN 6685-01-140-0166
NSN 5960-01-649-1341
NSN 6150-01-298-0536
NSN 2925-01-609-8464
NSN 6220-00-892-5187
NSN 6135-00-196-5267
NSN 5950-01-300-4078
NSN 5999-01-144-7656