Low sliding friction type seal packing made of flexible graphite sheet and a nickel alloy mesh, and formed into a ring, whose internal periphery has undergone lubricating treatment with PTFE and fine graphite powder.

This packing is used for nuclear applications, to control chlorine ion concentration.

This packing features a metal mesh that is easy to handle and reduces valve stem sliding friction, in addition to sealability and chemical resistance.

Fluid temperature: -200 to +400°C

(Packing temperature must be kept at 350°C or less.)

　　Operating temperature range is different from that for No. 6616CL.

Pressure: 77.6 MPaG max. (Class 4500)

pH: 0 to 14

Chlorine ion concentration: 100 ppm or less