A hi-temp steam "GW" packer cup, molded using a special 85 durometer proprietary EPDM rubber compound. This compound utilizes technology developed for the "Hot Rock Geothermal Project" by the U.S. Department of Energy in New Mexico a few years back when alternate energy sources were first being sought. The "GW-ST" uses the heavy-duty overlapping spring steel plate reinforcement and the special rubber compound allows this cup to be used in water or steam up to 550° F. This cup must never be used in liquid hydrocarbons. EPDM swells dramatically in oil or grease.
* FHD-GW: For a Heavy Duty Flurocarbon Cup, replace "-001" with "?003" (ex. TI-54864?001 becomes TI-54864?003).
** SEAL-GW: Has a smaller I.D. with o-ring for sealing insurance; on cups 10 3/4" & larger they do not have a smaller I.D., but if an oring is desired add a -007 to the base part number (ex. TI-14246 becomes TI-14246-007
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