VESTAKEEP® PEEK - Top Performance at High Pressure aND High TEMPERATURE
Subsea oil sources are moving further down and the digging holes in deep sea levels will add more thermal stress to sealing materials. VESTAKEEP® PEEK polymers, particulary the grades of the VESTAKEEP® 5000 series, show the needed combination of mechanical toughness and relaxation to alternating pressure. These grades are based on a polymer with an especially high molecular weight, that features an excellent property combination:
- Superior toughness, ductility and fatigue performance
- Excellent chemical and wear resistance
- Excellent long term performance under HPHT and sour gas conditions
- Flame retardant, low smoke and toxicity
- Easy to process and machine parts
The ductile nature VESTAKEEP® PEEK offers the right performance combination for back-up rings and seals in a seal pack application. In such applications the elastic recovery of VESTAKEEP® PEEK leads to a perfect seal with no leakage. By comparison, competition PEEK’s elastic recovery is much lower due to permanent plastic deformation normally associated with a less ductile material. VESTAKEEP® PEEK grades, thus offer exceptional performance under severe conditions such as chemicals (sour gas), high pressure, high temperature (HPHT), dynamic loads and complex assemblies.
VESTAKEEP® PEEK offers superior ductility, crack resistance, toughness, low temperature Impact and higher mechanical performance at elevated temperatures than competitive PEEK grades.