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 5960-00-082-4298
NSN 5930-00-533-9792
NSN 6610-01-010-4516
NSN 6620-01-353-9224
NSN 6135-01-079-7852
NSN 6650-00-336-4828
NSN 6620-01-271-0711
NSN 5950-00-459-4283
NSN 2925-00-886-4718
NSN 5855-01-357-7907
NSN 6145-01-470-0293
NSN 2925-01-412-9520