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Lubricants

Bolting lubricants or thread compounds perform one very important function; controlling friction. Friction control is needed for both accurate bolt loading and easy loosening of the bolts. As a provider of world-class bolted joint solutions Hydratight’s key focus is the correct assembly of bolted joints, so in order to better control the variables of joint assembly we developed our own line of thread compounds (Lubricant Solutions).

We have three primary lubricant blends; each with a separate field application.

  • Nickel 328 for high temperature and high bolt loads
  • Moly-B for high temperature, high bolt load, on carbon and exotic bolts
  • Water Boy for new construction where excess oil and grease threatens to prolong cleanup before painting is completed

Purchase any of the lubricants range »

Facts about thread compounds:

  1. The solids in the compound do most of the work by smearing into a thin lubricating surface for the loads to ride on.
  2. The more solids in the compound the better it will work. Lubricant Solutions blends lubricants with the highest possible solids content.
  3. Tests show that the more lubricant applied, the more consistent the bolt load is, versus torque.Tests show that thread compounds become more slippery with increased temperature. Current testing has not been done above 375oF.
  4. Certain compounds that contain nickel will become more slippery when the bolt load is increased.
  5. The greases and oils cook out of the lubricant at about 400oF to 500oF.
  6. Exposure to high temperature over prolonged periods of time produce a very negative effect on thread compound. Generally it is more often oxidation than temperature that causes the breakdown of the compound.
  7. Commonly used base materials such as Molybdenum Disulfide often convert into slightly lesser lubricants (Molybdenum Oxide good to 1200oF), as they oxidize and some become very hard and abrasive, as in the case of nickel oxide.
  8. Free sulphur from Molybdenum Disulfide is often feared but should pose no problem, as it requires moisture to produce hydrogen sulphide and at its conversion temperature moisture is very seldom ever present.