Xdry
The high-performance desiccant inside our adsorbers
GIEBEL Xdry® is a desiccant mixture of silica gel orange green and molecularsieve 13X developed for protecting systems and processes more efficiently against moisture ingress.
High contrast color indicator
High water absorbtion capacity
Can be used at high temperatures
Can be used at low humidity levels
Why Xdry outperforms conventional silica gel
The drier the air entering a system, the lower the risk of moisture damage such as rust, reduced oil quality and insufficient lubrication - that's why we use GIEBEL Xdry® in our adsorbers.
Combining silica gel orange-green with molecular sieve 13X, GIEBEL Xdry® unites high moisture absorption, a clear color-change indicator and exceptionally strong moisture binding. It outperforms pure silica gel, especially at high temperatures and low humidity levels.
What Xdry is made of
Years of research and extensive testing across hydraulic systems, gears, storage tanks, barrels, IBCs and transformer breathers have shaped the development of GIEBEL Xdry®. By evaluating real-world operating conditions, we developed a carefully balanced blend of two high-performance desiccants, tailored to the demands of breathing applications.
The hardest molecular sieve on the market
With 140 N crushing strength – compared to the market average of 70-80 N – our molecular sieve 13X delivers less dust, more stable filling and reliable adsorption performance.
Grain size: 3-5 mm
Actual pore size: 0.75 nm
Effective pore size: 0.9-1.0 nm
Bulk density: 0.60 kg/l
Pore volume: 0.35-0.7 ml/g
Fracture strengh: > 140 N
Specific surface area: 650-1250 qm/g
575°C loss of ignition: < 2 %
Abrasion rate: < 0.2 %
Water adsorption capacity: > 210 ml/kg
High-capacity silica gel with color indicator
Silica gel orange-green delivers a high moisture absorption of up to 35 % and a color indicator, making moisture levels instantly visible.
Grain size: 3-5 mm
Actual pore size: nm
Effective pore size: nm
Bulk density : 0.78 kg/l
Pore volume: 0.35-0.45 ml/g
Fracture strengh: > 200 N
Specific surface area : 600-800 qm/g
575°C loss of ignition: %
Abrasion rate: < 2 %
Water adsorption capacity: > 370 ml/kg
The science behind moisture adsorption
The two desiccants in GIEBEL Xdry® – orange-green silica gel and molecular sieve 13X – bind moisture through different adsorption mechanisms.
Molecular sieve 13X: Strong, selective adsorption
Molecular sieve has a structure similar to a grid. Its size determines which molecules can pass through and which cannot. The zeolith absorbs moisture through selective adsorption, whereby water molecules are bound due to their size and polarity. This adsorption is stronger than with silica gel and also works at low humidity levels and high temperatures.
Silica gel: High moisture absorption
Silica gel has a highly porous structure with an extensive internal surface area. Water molecules attach to its pore surfaces through physical adsorption driven by van der Waals forces. This makes silica gel particularly effective at high humidity levels and moderate temperatures.
