BU SOLID (PBK) (MBK) (BACKUP RING)

product

SOLID BU is a support ring designed to limit the permissible sealing gap for the O-rings for both static and dynamic applications.

PRODUCT ADVANTAGES

  • Able to work in high pressures
  • Easy assembly
  • Able to work in hard conditions
  • Wide range of dimensions
  • Used for rod and piston 

APPLICATION:

All types of hydraulic cylinders , injection moulding machines , mining equipment , marine hydraulics , loading platforms , cranes and heavy duty applications.

INSTALLATION:

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.

MATERIAL: TPE

 

OPERATING CONDITIONS
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.

SURFACE ROUGHNESS Ra Rmax
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.

Loading... please wait
# Vota code Name Application Material Pressure
(bar)
Temperature °C Sliding Speed (m/s)
backup-ringen/bu-solid BU SOLID BU SOLID (PBK) (MBK) (BACKUP RING) STATIC PU 350 -30°C +100°C 1.0
PTFE WHITE 500 -40°C +200°C 2.0
TPE 500 -40°C +120°C 1.0
Find product

CB = Custom build (price on request)
* = Stock item
Stock = 0 (and not a Stock* or CB product) -> minimum item value € 10.00

# Description Info Stock Price Add to cart
{{product.number}} {{product.description}} {{product.item_type_name.substring(0, 5)}} {{product.stock}} {{product.price|customCurrency:"€":",":".":2}}