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 5985-01-327-3017
NSN 5835-01-532-9373
NSN 6650-01-469-9715
NSN 6685-00-493-6104
NSN 5975-01-502-5531
NSN 6320-00-115-0883
NSN 5925-01-090-9631
NSN 4140-01-237-1509
NSN 5935-00-894-7039
NSN 5915-01-654-3204
NSN 5895-01-519-3363
NSN 5950-01-550-1668