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 5950-00-038-8286
NSN 6150-00-973-4805
NSN 6620-01-243-5281
NSN 5950-01-261-7938
NSN 5960-00-099-9790
NSN 5925-01-476-3879
NSN 5895-00-761-8406
NSN 6130-00-543-1302
NSN 6110-00-627-7872
NSN 6240-01-237-1481
NSN 6135-01-610-2098
NSN 5960-01-147-0905