OKS 235 – Aluminium Paste, Anti-Seize Paste

Aluminium paste for assembling screw and bolt threaded connections that are subjected to high temperatures and corrosive influences.

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Areas of application

  • Assembly lubrication of machine parts, screw connections, fittings, flange and plug-in connections, guides, sliding and sealing surfaces of ovens, boilers, burners, motors, engines subject to high-temperature conditions
  • Separating paste

Advantages and benefits

  • Excellently suited for preventing seizing and burning together
  • Highly effective due to outstanding separating action and pressure absorption
  • Good protection against ingress of splashing and condensed water
  • Free of heavy metal compounds
  • Good corrosion protection
  • Excellent water resistance
  • Wide operating temperature range
  • Optimum ratio of screw tightening torque to achievable pre-tension
  • Also available as spray version OKS 2351

Technical specifications

  • lower operating temperature: -30 °C
  • upper operating temperature: 110 °C / 1,100 °C (lubrication / separation)
  • thread friction coefficient (μ total): 0.13 (screw ISO 4017 M10x55-8.8 black-oxide, nut ISO 4032 M10-10 black-oxide)


For best adhesion, clean contamination and other lubricants from thread and slide surfaces. Best way is to clean mechanically first (for example, with a wire brush) and then with OKS 2610/OKS 2611 universal cleaning agent. Apply sufficient OKS 235 evenly to the head or nut contact surface and to the thread by using a brush, spatula, etc. Do not use paste instead of grease and mix only with suitable lubricants.

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