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Caustic Alkali Base Resistant Belts (Bleach Proof Belting)

Dura-Belt’s Caustic Alkali Alkaline and Bleach Resistant Hytrel® polyester belts are elastic round belts that work well in most alkali (high pH) environments.

Following is their alkali resistance rating:

  • Ammonium Hydroxide (Ammonia)-- Excellent
  • Bleach (Sodium Hypochlorite) -- Excellent
  • Calcium Hydroxide -- Good
  • Caustic Soda -- Excellent
  • Chlorine Dioxide -- Excellent
  • Coolants -- Most are Good to Excellent
  • Lye -- Excellent
  • Magnesium Hydroxide -- Good
  • Potassium Hydroxide -- Excellent
  • Soda Ash -- Excellent
  • Sodium Hydroxide (Lye) -- Excellent
  • Sodium Hypochlorite (<20%) -- Excellent

The information above was taken from two industrial sources and is untested by DuraBelt. Therefore, we cannot assume any liability for its reliability. The two sources sometimes contradict each other, so we highly recommend that you test the resistance of your belt to the alkali (alkaline) solution before making a substantial purchase. Use this information only as an initial guideline and confirm is applicability with your own tests.

Bleach resistant Hytrel belt & caustic alkali proof polyester belting

Bleach Resistant Hytrel Belt

Alkali (Base) Resistance Test:  Put a piece of Hytrel polyester belting in a bottle containing the alkali solution at the expected concentration. Let it sit for a week at the expected operating temperature. If the appearance of the belt changes significantly (extreme discoloration, bloating, cracking, becomes limp, etc.), then it is not resistant to the alkali solution. We will send you free samples to test.

Also note that the presence of other chemicals, the concentration of each substance, and the ambient temperature often greatly affects chemical resistance. Therefore, the belts may not be completely caustic alkali proof in all environments. For more info click on Chemical Resistance Chart

For the best in caustic alkaline resistant belts, alkali proof belting, and bleach resistant polyester belts, insist on DuraBelt.

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