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 5975-00-596-2119
NSN 6620-00-070-2680
NSN 6320-01-608-1935
NSN 5960-01-614-8005
NSN 5930-01-340-7511
NSN 7035-01-213-5153
NSN 2925-01-434-6945
NSN 5925-01-224-7031
NSN 5999-00-932-2509
NSN 6610-01-400-3880
NSN 6150-00-156-6080
NSN 5925-01-218-6427