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EPM, Inc.
112 W Burke St.
Stockbridge, GA 30281
800-659-5050
sales@epm.com

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Call Free in the US: 800.659.5050
Local & International: 770.389.0501
Fax U.S: 888.353.7325
Fax Local & International: 770.389.0652
///Die Formed Flexible Graphite Rings
Die Formed Flexible Graphite Rings 2016-12-29T09:16:33+00:00

Die Formed Flexible Graphite Rings


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Standard die forming of flexible graphite squeezes the life out of the ring – that’s why we pre-form. We put compressibility and resilience into each ring and that’s what makes the difference. When you receive a pre-formed ring from EPM, it still has 15% to 20% compressibility left in it. As you install the ring, it’s only necessary to tighten the packing until a seal is effected, which leaves considerable life in the ring for future adjustments. The extra care we take makes the difference.

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A partially compressed ring. Fold, which appears in pre-forming, is not significant and will disappear when ring is compressed in stuffing box.

 

 

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Pattern of folds (opened for illustration) assures uniform distribution of thermal expansion and thermal conductivity, as well as maximum resilience.

 

THE EFFICIENT METHOD FOR VALVE STEM PACKING

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THE BENEFITS OF DIE-FORMED
FLEXIBLE GRAPHITE

• Individually formed to meet your specific dimensions.

• Slight interference fit to bore and stem to insure a tight seal.

• Less waste than conventional coils of packing.

• No need to pull old packing out. Simply add ring when needed.

• Each ring molded to 85 lb. per cu. foot.

• Even distribution of work load to each ring.

Note: For clearances greater than .020 between stem and stuffing box, EPM suggests a single ring of EPM-7777 braided graphite packing in bottom of stuffing box as an anti-extrusion ring.

LAMINATED FLEXIBLE GRAPHITE RINGS

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EPM can also furnish packing rings fabricated from layers of flexible graphite sheet. Because these ring sets do not have the compressibility and resilience of our pre-formed rings, equipment dimensions and equipment conditions are critical. An EPM representative should be consulted. Unlike pre-formed rings, heat conductivity and expansion characteristics are very directional with these packing rings.