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 6320-00-977-3930
NSN 6240-01-537-1176
NSN 5855-01-122-9418
NSN 5905-01-092-2837
NSN 5915-01-485-5547
NSN 6620-00-820-9616
NSN 5910-00-807-9520
NSN 5990-01-243-4233
NSN 5975-01-470-4965
NSN 5930-01-500-1799
NSN 5915-00-993-6398
NSN 6135-00-932-3136