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 5998-01-585-1432
NSN 5990-01-164-0220
NSN 5910-01-501-5099
NSN 5905-00-087-2256
NSN 5895-01-345-0825
NSN 5915-01-532-3151
NSN 6610-00-186-9180
NSN 6620-00-740-3699
NSN 5996-01-329-3408
NSN 5996-00-090-9512
NSN 5975-01-274-4850
NSN 6320-01-185-3857