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 6145-01-474-5459
NSN 5950-01-507-1778
NSN 6320-01-274-8886
NSN 5925-01-209-5566
NSN 6620-01-606-4138
NSN 4140-01-210-2212
NSN 6135-00-932-3136
NSN 6650-01-353-5903
NSN 5905-01-542-9870
NSN 5975-01-424-2862
NSN 5975-01-290-4224
NSN 6130-01-542-1356