POLYPAC – SELEMASTER DSM

Description

POLYPAC – SELEMASTER DSM range has been designed to meet the needs of hydraulic equipments operating at high pressures and subjected to severe loading and vibration conditions. The main sealing element is manufactured in a highly compression set resistant nitrile. Most important quality of this element is the design of the multiple sealing lips for maximum sealing efficiency and end face configuration, which ensures that the selemaster can tolerate vibrations and severe misalignment. Two support rings are made in cotton fabric reinforced nitrile elastomer; the ‘’U’’ shape is energised when pressure is applied. The last elements are the two guide rings manufactured in acetal resin which have also the function of anti-extrusion rings.

1) Sealing element
2) Support ring
3) Guide ring

Advantages

– Effective sealing during vibration and shock loading
– High sealing efficiency
– Extrusion resistance at high pressure

Application Examples

• Earth-moving machines
• Excavators
• Lift platforms

Technical Data

Operating conditions
Pressure: Up to 70 MPa
Velocity: Up to 0.5 m/s
Temperature:-40_C to +130_C
Media: Hydraulic fluids Mineral oil-based hydraulic fluids, water and water/ glycol emulsions

Important Note:

The above data are maximum values and cannot be used at the same time. e.g. Maximum operating speed depends on material type, pressure, temperature and gap value. Temperature range also dependent on medium

Standard Material

1) Sealing element NBR 80
2) Support ring Cotton reinforced NBR
3) Guide ring POM

Ordering Example

Selemaster DSM
Bore diameter: DN = 70.0 mm
Groove diameter: d = 50.0 mm
Groove width E = 35.0 mm
Part No. : PCL000700
Material code: N8CO
Polypac Ref.: DSM 275196/1A

POLYPAC – SELEMASTER DSM