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 6620-01-183-5329
NSN 6320-01-220-2264
NSN 5960-00-077-1828
NSN 6105-01-544-1049
NSN 5915-01-298-6379
NSN 6220-01-207-1229
NSN 6650-01-527-3693
NSN 5895-00-480-5892
NSN 5920-01-519-8835
NSN 5999-00-021-3379
NSN 5925-01-646-0722
NSN 4140-01-497-2716