Merkel Compact Seal HDP 330 Two-part seal set for sealing pistons, consisting of a PA slide ring with a stepped cut and an elastomer contact pressure element for producing pre-load. ■ ■
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Product advantages: Extreme strength against gap extrusion thanks to the PA sliding component Extremely high abrasion resistance Stepped cut for easy fitting in a closed housing Greater surface roughness partly permissible in comparison to conventional seals Rectangular contact pressure element produces consistently high pre-loading force and offers high protection against twisting in the housing Housings should preferably comply with ISO 7425- Dynamic and static tightness comparable to PTFE piston seals
T
– 0 … + 00 °C
v
0,8 m/s
p
60 MPa
Available materials
PA 4 2/70 NBR 77605
Application
Agricultural machinery, Earth moving equipment, Industrial vehicles, Loading platforms
Standard product range Wipers Merkel Wiper P 6 Single-acting elastomeric dirt wiper with bearing segments. Product advantages: NBR dirt wiper that is primarily used for large diameters ■ Good seating at the outside diameter ■ Very good wiping action ■ Wiper can be used for a wide temperature range ■ No twisting in the housing and no pressure build-up between seal and wiper
T
– 0 … +200 °C
v
2,0 m/s
Available materials
85 FKM K664, 85 NBR B247
Application
Presses, Rolling mills, Steel hydraulics engineering
Merkel Wiper PU 5
T
– 0 … + 0 °C
Dirt wiper with additional static sealing lip and bearing segments; sealing edge of wiper lip slightly rounded.
v
2,0 m/s
Product advantages: Single-acting wiper, use also in standardised housings according to ISO 6 95 Type A ■ Additional static sealing lip prevents ingress of dirt and water spray ■ Wiper lip with slightly rounded sealing edge reliably wipes dirt away and leaves a residual oil film on the retracting rod; friction behaviour and service life are improved ■ The support on the wiper heel prevents twisting in the groove as well as pressure build-up between wiper and seal
4
Available materials
95 AU V 49
Application
Agricultural machinery, Cranes, Earth moving equipment, Industrial vehicles, Injection moulding machines, Loading platforms, Mining, Presses, Support cylinders, Telescopic cylinders