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 5835-01-042-0497
NSN 5990-00-111-3614
NSN 6240-01-055-0801
NSN 6610-00-315-9315
NSN 5990-01-312-2638
NSN 6240-01-021-7822
NSN 6320-00-036-3688
NSN 5999-00-298-8310
NSN 6135-01-265-1384
NSN 5915-00-501-2188
NSN 6105-01-066-0330
NSN 6620-00-811-7614