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 5905-01-527-1372
NSN 6145-01-192-0738
NSN 5915-00-273-1693
NSN 5996-00-472-5387
NSN 5935-01-281-5516
NSN 6145-00-186-6291
NSN 5925-00-960-5214
NSN 6240-00-952-4501
NSN 6135-01-395-4114
NSN 5910-01-389-6625
NSN 4140-00-501-7833
NSN 5905-00-208-0937