LUBRICATING THE RUBBER PARTS OF THE SEAL 18-10

Lubricants are used on the elastomers to make installation easier, but you must be careful:

LUBRICATING THE MECHANICAL SEAL FACES.

Do you have to put a lubricant of some type on the mechanical seal faces before you press them together? The answer is NO!

In some instances the lubricant can do harm:

Most seal applications use a carbon/ graphite face running against a hard face (silicon carbide as an example). The graphite will leech out of the carbon/graphite and deposit on the hard face. This is the black ring you see on the hard face.

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