Elastomers

The basis of our sealing technology

Elastomers are dimensionally stable yet highly elastically deformable plastics. As their glass transition temperature lies below the operating temperature, they can be reversibly deformed under tensile and compressive loads and always return to their original, undeformed shape afterwards.
For modern sealing technology, we therefore rely on materials from the groups of elastomers and thermoplastics.

Properties and classification
Elastomers are primarily differentiated according to their polarity and degree of saturation. These criteria provide important information about performance:
  • Polarity indicates swelling behaviour and chemical resistance.
  • Saturation provides information about ozone and ageing resistance.

Available elastomer materials at xpress seals:
ClassificationMaterial (abbreviation)
Non-polar, saturatedEPDM
Polar, unsaturatedNBR
Polar, slightly unsaturatedHNBR
Polar, saturatedFPM, MVQ, TPU
(thermoplastic polyurethane elastomer based on polyester)

Data sheets and further information
The detailed data sheets for the elastomer materials available at xpress seals, including their key characteristics and properties, can be found here:
Datas sheets