XNBR Rubber Molded Parts

Cabboxylated Nitrile is similar to Nitrile rubber, but the polymer backbone has been chemically modified with Carboxylic Acid containing group.
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Product Details

Carboxylated Nitrile(XNBR)

Cabboxylated Nitrile is similar to Nitrile rubber, but the polymer backbone has been chemically modified with Carboxylic Acid containing group. This result is XNBR with more excellent abrasion and tear resistance than traditional NBR. For this reason, XNBR based parts are usually applied in dynamic assembly such as seals and rod wipers.

Physical & Mechanical Properties

  • Durometer or Hardness Range: 50 – 90 Shore A

  • Tensile Strength Range: 1,000 – 3,500 PSI

  • Elongation (Range %): 250% – 600%

  • Abrasion Resistance: Excellent

  • Adhesion to Metal: Good to Excellent

  • Adhesion to Rigid Materials: Good to Excellent

  • Compression Set: Fair to Good

  • Flex Cracking Resistance: Fair

  • Impact Resistance: Good to Excellent

  • Resilience / Rebound: Fair to Good

  • Tear Resistance: Excellent

  • Vibration Dampening: Fair to Good

Environmental Performance

  • Colorability: Good

  • Flame Resistance: Poor

  • Gas Permeability: Fair to Excellent

  • Odor: Good

  • Ozone Resistance: Fair

  • Oxidation Resistance: Good

  • Radiation Resistance: Fair to Good

  • Steam Resistance: Fair to Good

  • Sunlight Resistance: Poor to Good

  • Taste Retention: Fair to Good

  • Weather Resistance: Fair to Good

  • Water Resistance: Good


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