EDIT2
Varies by OEM
$$
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Specs

Pressure High
Dynamic Service Speed High
Seal Directionality Bidirectional
Manufacturing Method Combination
Common Modifications Custom combinations energizer and cap materials
Catalog Standards Varies by OEM
Customizable Yes
Comparative Cost $$
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Special Application

Comparitively inexpensive intermediate technology for high P:V applications.  Temperature limited by elastomer properties.  Low running/breakout friction properties