PDGS - Product variants

PDGS10
The PDGS10 is the standard seal for high pressures up to 220 bar (3,191 PSI). Since many years the seal demonstrates their reliability worldwide in a wide variety of applications. It is characterized by very low leakage and sets the standard in the market for low-emission compressor gas seals.

Operating range
Shaft diameter:
d = 24.5 … 360 mm (0.96“… 14.17“)
Pressure (static): p = 0 … 220 bar (725 … 3.191 PSI)
Pressure (dynamic): p = 0 … 200 bar (725 … 2.901 PSI)
Temperature:
t= -50 °C … +230 °C (-58 °F … +446 °F)
Sliding velocity: vg = up to 227 m/s (744 ft/s)

Materials
Seal face: Silicon carbide with DLC coating
Seat: Silicon carbide with DLC coating
Secondary seals: Polymer rings
Metal parts: 1.4006 or other stainless steels
PDGS15
The PDGS15 series enable the sealing of very cold media up to -200 °C (-328°F) . Therefore special, cold-resistant steels are used. For years, these seals are successfully used in LNG liquefaction plants, for example.

Operating range
Shaft diameter:
d = 24.5 … 360 mm (0.96“… 14.17“)
Pressure (static and dynamic): p= 100 bar (1450 PSI)
Temperature:
t = -200 °C … +150 °C (-328 °F … +302 °F)
Sliding velocity: vg = up to 227 m/s (744 ft/s)

Materials
Seal face: Silicon carbide with DLC coating
Seat: Silicon carbide with DLC coating
Secondary seals: Polymer rings
Metal parts: 1.4313-QT650 or other stainless steels
PDGS51
The PDGS51 was developed for use in extreme high pressure applications. Adapted sliding faces and an innovative design of the shaft sleeve allow pressures up to 450 bar (6.525 PSI) and more. Most of these seals are successful in use in compressors for gas injection.

Operating range
Shaft diameter:
d = 85.5 … 173 mm (3.37“… 6.81“)
Pressure (static and dynamic): p = up to 650 bar (7.977 PSI)
Temperature:
t = -50 °C … +230 °C (-58 °F …+446 °F)
Sliding velocity:
vg = 0,6 …. 190 m/s (2 … 623 ft/s)

Materials
Seal face: Silicon carbide with DLC coating
Seat: Silicon carbide with DLC coating
Secondary seals: Polymer rings
Metal parts: 1.4006 or other stainless steels
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