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 5910-01-275-8178
NSN 5990-00-155-2306
NSN 5910-01-595-7670
NSN 5915-01-434-5094
NSN 5975-00-840-2830
NSN 6645-01-263-5481
NSN 5915-01-429-9287
NSN 6240-01-591-2467
NSN 5935-00-725-8982
NSN 6105-01-611-9920
NSN 6650-01-477-9545
NSN 5855-01-551-7923