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 6135-01-494-8657
NSN 4140-00-808-5336
NSN 5996-00-621-3898
NSN 5985-00-882-1514
NSN 5945-01-580-5731
NSN 5990-01-621-2788
NSN 5935-01-073-8754
NSN 2925-00-087-2465
NSN 5975-00-183-7693
NSN 5950-00-769-3614
NSN 5930-01-595-2700
NSN 5905-00-887-9556