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SUBJECT: Classifying chemicals for mechanical sealing.

I. Fluids sensitive to small changes in temperature and or pressure. The temperature change can cause the fluid to:

II. Fluids sensitive to agitation (non Newtonian fluids)

III. Fluids that need two seals

IV. Slurries

V. Non Lubricating fluids (in order of difficulty to seal)

VI. Fluids that react together to form a solid. Often a mixer or blender application

VII. Clean lubricating liquids

VIII. Extreme operating conditions. These are non-chemical, but present seal problems.

IX. Not listed in the above categories.

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