Elastomers – Nuclear
James Walker® has developed two ranges of Shieldseal® elastomers for use with ionising radiation. They are backed with evaluation results from specialist test houses and nuclear sector customers.
Shieldseal®600
Elastomers that resist ionising radiation. Their change in physical properties has been monitored over time with gamma radiation to prove compression-set resistance and long service life.
Shieldseal 663 – Radiation grade
PMUC approved material for use in French nuclear plant
- Peroxide cured ethylene-propylene terpolymer
- Radiation/ageing tested for 40-year lifespan
- Strong resistance to short-term high pressure and temperature spikes
- Nominal 80 IRHD for general sealing applications
Shieldseal 664 – Radiation grade
Flexible grade elastomer for use with ionising radiation
- Peroxide cured ethylene-propylene terpolymer
- Radiation/ageing tested for 30+ year lifespan
- Strong resistance to short-term high pressure and temperature spikes
- Nominal 65 IRHD for general sealing applications
Shieldseal 621 – Radiation grade
Nitrile elastomer for use with ionising radiation
- Acrylonitrile-butadiene formulated for radiation resistance
- Excellent chemical resistance
- Resistant to wear and abrasion
- Excellent value for money
Shieldseal 641 – Radiation grade
Soft grade elastomer for use with ionising radiation
- Fluoroelastomer with excellent radiation resistance
- Enhanced high temperature capability
- Soft grade for sealing duties at low closing forces
- Excellent value for money
Shieldseal 661 – Radiation grade
Soft grade elastomer for use with ionising radiation
- Ethylene-propylene with outstanding radiation resistance
- Soft grade material for efficient fluid sealing at low closing forces
- Low levels of the ions that promote metalwork corrosion
- Economically priced
Shieldseal 662 – Radiation grade
Medium grade elastomer for use with ionising radiation
- Ethylene-propylene with outstanding radiation resistance
- Medium hardness for general applications
- Low levels of the ions that promote metalwork corrosion
- Economically priced
Shieldseal 664 – Radiation grade
Flexible grade elastomer for use with ionising radiation
- Peroxide cured ethylene-propylene terpolymer
- Radiation/ageing tested for 30+ year lifespan
- Strong resistance to short-term high pressure and temperature spikes
- Nominal 65 IRHD for general sealing applications
Shieldseal 663 – Radiation grade
PMUC approved material for use in French nuclear plant
- Peroxide cured ethylene-propylene terpolymer
- Radiation/ageing tested for 40-year lifespan
- Strong resistance to short-term high pressure and temperature spikes
- Nominal 80 IRHD for general sealing applications
