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 5945-01-487-4127
NSN 5950-00-678-0656
NSN 5950-01-274-3328
NSN 6650-00-518-5194
NSN 5975-01-569-3906
NSN 6320-01-516-3836
NSN 6110-01-224-9006
NSN 4140-01-078-6520
NSN 7035-00-371-7749
NSN 5960-01-364-9795
NSN 5950-01-238-5965
NSN 6135-01-472-9011