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 6105-00-297-3762
NSN 5950-00-855-3775
NSN 5905-01-469-3317
NSN 5895-01-433-3548
NSN 5915-01-330-2183
NSN 5935-00-043-3914
NSN 5835-01-171-9126
NSN 6610-00-277-7206
NSN 5975-00-684-8188
NSN 5985-00-104-8289
NSN 5930-00-917-8467
NSN 5910-00-164-7595