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 5950-00-005-3245
NSN 5925-00-500-8157
NSN 5920-01-400-0791
NSN 2925-01-535-7235
NSN 5905-00-084-0134
NSN 7035-01-423-8343
NSN 5950-01-196-6317
NSN 6145-01-217-0890
NSN 5945-01-449-2594
NSN 2925-01-157-9204
NSN 6240-00-660-8849
NSN 6130-01-373-1282