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The KR 4 is a copolymer of styrene and butadiene. Its combined styrene amount is 23.5% greater. It is the most frequently used general-purpose rubber among synthetic rubbers. It has many advances and applications similar to those of the natural rubber, and excellent wear resistance, aging resistance, electric property, winter-hardiness, and dynamic property. As a sealing product, it is mainly used for automotive brake oil, animal oil, vegetable oil, water, alcohol, etc. It is not appropriate for mineral oil, because it swells to a great degree.

• Product Features
  • Excellent abrasion resistance
  • Excellent aging resistance
  • Excellent electric property
  • Excellent cold resistance
  • Excellent dynamic properties
• Product Specifications
  • Working pressure : 10kgf/cm2
  • Working temperature : -50℃ ~ 100℃
  • Manufactured dimensions : 1/2“ ~ 1200Ø
  • Gasket Thickness : 1.5mm / 3.0mm / etc.
  • Gasket Factor :

    Gasket Factor

    shore hardness	m	y
    Below 75A	0.5	0psi
    Higher 75A	1.0	200psi

• Applicable Lines
  • Water
  • Alcohol
  • Organic Acids
  • Ketones
  • Aldehydes
  • Brake oil
  • etc.
• Data
  • Data Sheet KR 4 Data Sheet