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 5930-01-532-2640
NSN 6150-01-264-8635
NSN 6150-01-074-3423
NSN 6145-00-950-3867
NSN 5905-01-147-2504
NSN 5950-00-467-2752
NSN 2925-01-347-9346
NSN 5910-01-029-8169
NSN 5999-01-535-7098
NSN 5915-01-116-4153
NSN 6110-00-465-0589
NSN 4140-01-088-1898