SOLID BU is a support ring designed to limit the permissible sealing gap for the O-rings for both static and dynamic applications.
All types of hydraulic cylinders , injection moulding machines , mining equipment , marine hydraulics , loading platforms , cranes and heavy duty applications.
Easily assembled into the housing by hand. BU SOLID back-up ring is in non split form. In case of a difficulty during installation the back-up ring can be cut carefully with 30° angle and assembled afterwards. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the back-up ring must be oiled with system oil.
Note: BU SOLID ring is safely used with 0.20 permissible sealing gap up to 500 bar. For special applications PTFE back-up ring is produced on special requests.
|MEDIA||Mineral oils(DIN 51524)||HFA and HFB||HFC|
|TEMPERATURE||-40°C +120°C||+5°C +60°C||-30°C +60°|
|DYNAMIC CONTACT PRESSURE||≤500 N/mm2||≤500 N/mm2||≤500 N/mm2|
|SPEED||≤1.0 m/s||≤1.0 m/s||≤1.0 m/s|
Note: The above data are maximum values and cannot be used at the same time.
|Sliding Surface Ød||≤0.3 µm||≤3 μm|
|Groove Base ØD||≤1.8 µm||≤10 µm|
|Groove Flanks B||≤3 µm||≤16 µm|
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 10.00