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 5985-01-524-4982
NSN 6150-01-549-4219
NSN 5920-01-276-4806
NSN 5925-01-078-6673
NSN 5999-00-918-6887
NSN 5905-01-046-8942
NSN 5945-01-392-1068
NSN 6240-00-607-4303
NSN 5930-01-227-7268
NSN 6130-01-578-8453
NSN 5990-01-016-4194
NSN 6320-01-078-8257