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 5985-01-306-7564
NSN 6150-00-452-9078
NSN 5996-00-553-7348
NSN 5925-01-227-2798
NSN 5905-01-502-8458
NSN 6135-01-296-1860
NSN 5910-00-806-2853
NSN 5930-01-488-5701
NSN 5999-01-436-0857
NSN 6610-00-386-4745
NSN 6145-01-609-0028
NSN 5996-01-183-9053