At a glance
Ratings at 20 °C.
- Rated A, very good resistance
- PTFE, PP, Viton (FPM), NBR, SS 316, SS 304, Aluminium, FEP, Acetal (POM), PETG (10)
- Rated B, good resistance
- none (0)
- Rated C, limited resistance
- none (0)
- Rated D, not resistant
- EPDM (1)
- No data in the source
- HDPE, PVDF, PVC Rigid, LDPE, ECTFE/ETFE, Nylon (PA), Polycarbonate, Silicone, PVC Flexible, Polystyrene, Polysulfone, PMP, SAN
- Rated lower at 50 °C than at 20 °C
- PP (A → C)
Rating profile by material family
Effect of temperature, 20 °C to 50 °C
Substance
- Name in the source (German)
- Hydrauliköle (Mineralölbasis)
Resistance table
| Material | 20 °C | 50 °C | Remark |
|---|---|---|---|
| Thermoplastics | |||
| PP | A | C | |
| PETG | A* | – | |
| Acetal (POM) | A | – | |
| Fluoropolymers | |||
| PTFE | A* | – | |
| FEP | A* | – | |
| Elastomers | |||
| EPDM | D | D | |
| Viton (FPM) | A* | – | |
| NBR | A | – | |
| Metals | |||
| SS 316 | A | A | |
| SS 304 | A | A | |
| Aluminium | A | A | |
* estimated rating, given in the source without a temperature
Not rated in the source, so not in the table: HDPE, LDPE, PVC Rigid, PVC Flexible, PMP, Polystyrene, SAN, Polycarbonate, Nylon (PA), Polysulfone, PVDF, ECTFE/ETFE, Silicone
Rating scale
- A very good resistance
- B good resistance
- C limited resistance
- D not resistant
- – no data
- K no general statement possible
A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.
Frequently Asked Questions
Which materials resist Hydraulic Oil at high concentrations?
The materials with an A rating (resistant) for Hydraulic Oil at 20 °C are: PTFE, PP, Viton (FPM), NBR, SS 316, SS 304, Aluminium, FEP. These can generally be used in direct contact.
Which materials should be avoided with Hydraulic Oil?
Materials rated D (not resistant) for Hydraulic Oil are: EPDM. These should not be used in contact with Hydraulic Oil.
Does temperature affect chemical resistance to Hydraulic Oil?
Yes. 1 of 5 tested materials show a worse rating at 50 °C than at 20 °C for Hydraulic Oil. Materials affected include: PP.
Is PTFE safe for Hydraulic Oil?
PTFE is rated A for Hydraulic Oil at 20 °C. A rating of A means resistant, B means limited resistance, C means partly resistant, and D means not resistant.
About this data
The ratings come from the chemical resistance list published by Bürkle GmbH, which compiled them from raw-material manufacturers’ data. They describe laboratory tests on the raw material at 20 °C and 50 °C.
A finished part also sees pressure, mechanical stress, welds and mixtures that a laboratory test does not. Treat the rating as a first filter and test under your own conditions before relying on it.