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 5975-01-025-5794
NSN 6610-00-681-0590
NSN 5998-00-132-1361
NSN 5996-01-374-0024
NSN 5975-01-559-1965
NSN 6620-00-448-0667
NSN 5925-01-165-2923
NSN 5935-01-463-4728
NSN 5975-00-012-4376
NSN 6105-00-187-0094
NSN 5999-00-995-7869
NSN 6150-01-070-1926