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  CAPI™ 610 & 682 Dual  

The API 682 specification details many possible seal Arrangements, Types and Configurations for dual seals.

Permissible dual seal Types include; Face to Back (FB), Back to Back (BB) and Face to Face (FF) designs.
 
Patented design features
Rotary and stationary pusher seal designs
Rotary and stationary bellows seal designs
Face to Back, Back to Back & Face to Face types available
Modular design
Hydraulically balanced seal faces available
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