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 7035-01-334-5855
NSN 6240-01-592-3176
NSN 2925-00-585-9861
NSN 5905-00-193-1898
NSN 4140-01-591-4012
NSN 6145-01-357-7853
NSN 5960-01-368-4620
NSN 6150-00-539-9812
NSN 5950-00-517-8435
NSN 6320-01-032-9703
NSN 5985-00-367-4291
NSN 5930-01-450-7057