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 5990-01-437-4876
NSN 6220-01-557-6638
NSN 5930-01-583-3978
NSN 6610-01-340-1761
NSN 5996-01-306-2076
NSN 6130-00-952-1803
NSN 6620-00-917-5259
NSN 5920-01-267-2795
NSN 5965-01-450-2187
NSN 6240-01-544-6359
NSN 5990-01-478-5389
NSN 5895-00-519-5907