Material and series selection
- Use PA or PP for common mineral HLP systems within the confirmed temperature range.
- Treat HFA/HFC water-based fluids separately from mineral oil.
- For HFD phosphate ester, exclude NBR and confirm PVDF or metal.
By fluid
Hydraulic Oil
Mineral HLP · Fire-resistant HFA / HFC / HFD
Temperature−20 / +80 °C
Max. pressure400 bar
Standards3
Hydraulic systems combine pressure pulsation, vibration and fluid-specific material risks. Identify the exact hydraulic-fluid family before choosing the clamp body or cushion.
Installation checks
- Place supports near pumps, manifolds, valves and hose-to-tube transitions.
- Use heavy series where pressure pulses, tube mass or vibration are high.
- Verify bolt preload after commissioning where vibration is severe.
Common mistakes to avoid
- Selecting by pressure alone while ignoring pulsation and vibration.
- Using NBR with HFD fluids.
- Supporting a rigid tube run too far from valves or equipment.
Where this service appears
Dense pipework around pumps and manifolds needs close support to control pressure-pulse vibration.
Shock, frame flex and outdoor exposure normally justify heavy-series clamps and secure rail mounting.
Parallel supply and return lines benefit from twin clamps, tidy routing and easy maintenance access.
Material compatibility
| PPPolypropylene−20/+100 °C | PAPolyamide 6/66−40/+120 °C | NBRNitrile rubber−40/+100 °C | PVDFPVDF (Kynar®)−40/+150 °C | MetalMetal (Al/Steel)−196/+425 °C | |
|---|---|---|---|---|---|
| Hydraulic oil — mineral (HLP)ISO VG 46/68, DIN 51524-2 | B | A | A | A | A |
| Water-based hydraulic fluid — HFA / HFCoil-in-water emulsion, water glycol | A | B | A | A | B |
| Phosphate ester hydraulic fluid — HFDfire-resistant synthetic, e.g. Skydrol® | C | C | D | A | A |
| ⚠ NBR is incompatible with HFD phosphate ester fluids, a known failure risk. Confirm PVDF or metal options. | |||||
A — ExcellentB — GoodC — LimitedD — Not recommended
Full compatibility matrix Fluid variants
Mineral HLP
ISO VG 32 / 46 / 68, DIN 51524-2
Standard industrial hydraulic oil
HFA-E / HFC
Oil-in-water emulsion; water glycol
Fire-resistant, water-based
HFD phosphate ester
Synthetic, e.g. Skydrol® / Fyrquel®
NBR incompatible — use PVDF or metal
Applicable standards
ISO 4413Safety requirements for hydraulic fluid power systemsDIN 51524Hydraulic fluids — minimum technical requirementsEN ISO 4413Hydraulic fluid power — general rules and safetyComplete clamp assembly selection
| Assembly item | Selection guidance |
|---|---|
| Clamp body | PA or PP for HLP; confirm PVDF/metal for HFD. |
| Series | Standard for moderate duty; heavy for pulses, mass and shock. |
| Mounting | Rail mounting aids adjustment; welded plates suit fixed layouts. |
| Hardware | Choose bolts and rail for vibration load and site corrosion. |
Recommended series
Related technical resources
HFD phosphate ester clamp material guideReview NBR risk, PVDF, PP/PA and metal assemblies before specifying.Read guide HFC water glycol clamp material guideReview PP, PA, NBR and corrosion exposure for water-glycol fluid.Read guide Pipe clamp selection guideCheck OD, load, vibration, material and mounting method before specifying.Read guide Pipe clamp spacing guidePlan supports around bends, valves, pressure pulses and equipment vibration.Read guide
Details needed for a reliable recommendation
Send these operating details with your enquiry so the complete clamp assembly can be reviewed.
- Exact fluid/product name and concentration
- Continuous, peak and cleaning temperatures
- Pipe OD, material, wall thickness and quantity
- Pressure, pulsation, vibration and support load
- Indoor/outdoor exposure, salt, UV and washdown
- Required standards, certificates and mounting method
Frequently asked questions
Does higher pressure always require heavy series?
No. Tube OD, wall thickness, pulsation, vibration, span and support load must be assessed together.
Can NBR be used with every hydraulic oil?
No. NBR is commonly suitable for mineral oil but incompatible with HFD phosphate ester fluids.