GRAPH-LOCK^® DIE-FORMED RINGS

Style #470 – Standard Density Rings – Solid or Split

Style #490 – Premium Density Rings - Solid or Split

GRAPH-LOCK die-formed rings are produced using pure graphite GRAPH­-LOCK® tape. An exact amount of GRAPH-LOCK® diamond-texturized tape is placed into precision molds and then compressed by custom Garlock equipment to form GRAPH-LOCK® rings. The result - quality, smooth-finished, close-tolerance die-formed rings.  Any custom size can be produced. Every ring offers uniform axial/radial thermal conductivity and tight, sure sealing service.

TEMPERATURE                                              -328^oF to +932^oF

                                                                           -200^oC to 500^oC in oxidizing media

                                                                           +5432^oF (+3000^oC) continuous in reducing or inert media           

                                                                           +1200^oF (+650^oC) in steam

PH RANGE                                                        0 - 14 (Except strong oxidizers)

CONSTRUCTION                                             Die-Formed Rings produced from GRAPH-LOCK® Diamond-Texturized Tape

Certifiable to as low as 50 ppm Leachable Chlorides

Garlock nuclear grade material can be certified to MIL-P-24503B (SH); General Electric Spec D50YP12, Rev. 2, dated Oct. 1992; and can be certified for oxygen service.                             

FOR SURE SEALING...Always use Garlock braided end-rings with GRAPH-LOCK die-formed rings.  Typical sets include GRAPH-LOCK center rings with Garlock Styles 98, GARFITE^®  200, GARFITE 100, 1298, 1200-PBI* or 127-AFP end-rings.  Specify G-700 for nuclear  service.

The GRAPH-LOCK® center rings polish and enhance the stem for extended service, while the end-rings prevent extrusion and act as wipers to prevent graphite particle transfer.  A must when more than .015” separates stem and stuffing box bottom, in worn stuffing boxes, and in high-pressure service.

*PBI – Polybenzimidazole - Trademark of Celanese Fibers Operations

® REGISTERED TRADEMARK OF GARLOCK SEALING TECHNOLOGIES INC.