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 6620-00-883-1181
NSN 5905-01-353-7902
NSN 5930-00-024-8545
NSN 5960-01-061-9166
NSN 5915-01-547-4655
NSN 6645-01-345-4294
NSN 4140-01-430-1863
NSN 5996-01-210-5537
NSN 6135-01-140-8201
NSN 6620-01-461-6427
NSN 2925-00-152-1825
NSN 5960-00-952-7884