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Mandrel Release Agents

Mandrel release agents are synthetic liquid lubricants, which drastically reduce the friction between an uncured hose and the mandrel and remain effective until the cured hose has been removed from the hot mandrel. By reducing both the effort required to push the uncured hose onto the mandrel and pull the cured hose off the mandrel, our Struktol release agents simplify the production process, and in some extreme cases make the process viable. Additionally, many of our mandrel release agents are biodegradable.

Application of Mandrel Release Agents

All Struktol MR products (except gel types) can be applied by simply dipping the uncured hoses and brushing or spraying the material onto the mandrel.

Liquid mandrel release agents are usually utilised in classical dipping process, means the unvulcanised, ready cut rubber hose is dipped into the release agent product and put onto the mandrel surface. It is also possible to apply such release agent sby using brush or spraying equipment.

Struktol® MR 150
  • Mixture based upon high-molecular polyethers (silicone-free)
  • Liquid, watersoluble mandrel release agent for production of shaped hoses

Viscosity at 20 °C:: 2800 mPa · s

  • Suitable for most polymers except ECO and EAM
  • MR 150 is recommended for demoulding of FKM hoses
Struktol® MR 161
  • Mixture of water-soluble polymers
  • Liquid, watersoluble mandrel release agent for production of shaped hoses
  • Biodegradable

Viscosity at 20 °C: 5300 mPa · s

  • Especially suitable for EAM (Vamac®), (HT-) ACM, ACM and CSM
Struktol® MR 187
  • Mixture of water-soluble polymers
  • Liquid, watersoluble mandrel release agent for production of shaped hoses
  • Biodegradable

Viscosity at 20 °C:3500 mPa · s

  • Especially suitable for EPDM, both peroxide and sulphur cross-linked
Struktol® MR 226
  • Mixture of water-soluble polymers
  • Liquid, watersoluble mandrel release agent for production of shaped hoses
  • Biodegradable

Viscosity at 20 °C: 4000 mPa · s

  • Especially suitable for demoulding of NBR and HNBR hoses
Struktol® MR 322
  • Mixture of water-soluble polymers
  • Liquid, watersoluble mandrel release agent for production of shaped hoses
  • Biodegradable

Viscosity at 20 °C: 1500 mPa · s

  • Especially suitable for EPDM, both peroxide and sulphur cross-linked
  • Low viscosity for small hose diameters
Struktol® MR 390
  • Preparation based on high molecular weight polyethers (silicone-free)
  • Liquid, water soluble mandrel release agent for the production of shaped hoses

Viscosity at 20 °C: 2000 mPa · s

  • Especially suitable for ECO (including lead free cure system), and other standard polymers CR and EPDM
Struktol® MR 391
  • Formulation of high molecular weight polyethers (silicone-free)
  • Liquid, water soluble mandrel release agent for the production of shaped hoses

Viscosity at 20 °C: 1300 mPa · s

  • Especially suitable for ECO hoses (also lead free qualities), but also for other standard polymers as CR and NBR
Struktol® MR 603
  • Formulation of polyethers (silicone-free)
  • Liquid, water soluble mandrel release agent for the production of shaped hoses

Viscosity at 20 °C: 2000 mPa · s

  • Especially suitable for CM (CPE) hoses