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Brake Fluid Chemical Resistance

Resistance ratings for 24 plastics, elastomers and metals at 20 °C and 50 °C.

At a glance

Ratings at 20 °C.

Rated A, very good resistance
PTFE, HDPE, PP, PVC Rigid, EPDM, SS 316, SS 304, Aluminium, LDPE, FEP, Nylon (PA), PMP (12)
Rated B, good resistance
none (0)
Rated C, limited resistance
PVDF, Acetal (POM), PVC Flexible, Polystyrene (4)
Rated D, not resistant
Viton (FPM), NBR, Polycarbonate, SAN (4)
No data in the source
ECTFE/ETFE, Silicone, Polysulfone, PETG

Rating profile by material family

Brake Fluid: Rating profile by material familyThermoplastics: 6 A, 3 C, 2 D, 2 no data. Fluoropolymers: 2 A, 1 C, 1 no data. Elastomers: 1 A, 2 D, 1 no data. Metals: 3 A.Thermoplastics (13)Thermoplastics: 6 × A, very good resistance (HDPE, LDPE, PP, PVC Rigid, PMP, Nylon (PA))A 6Thermoplastics: 3 × C, limited resistance (PVC Flexible, Polystyrene, Acetal (POM))C 3Thermoplastics: 2 × D, not resistant (SAN, Polycarbonate)D 2Thermoplastics: 2 × no data (PETG, Polysulfone)– 2Fluoropolymers (4)Fluoropolymers: 2 × A, very good resistance (PTFE, FEP)A 2Fluoropolymers: 1 × C, limited resistance (PVDF)C 1Fluoropolymers: 1 × no data (ECTFE/ETFE)– 1Elastomers (4)Elastomers: 1 × A, very good resistance (EPDM)A 1Elastomers: 2 × D, not resistant (Viton (FPM), NBR)D 2Elastomers: 1 × no data (Silicone)– 1Metals (3)Metals: 3 × A, very good resistance (SS 316, SS 304, Aluminium)A 3
A very good resistanceB good resistanceC limited resistanceD not resistantno data
Number of materials in each family with each rating at 20 °C.

Effect of temperature, 20 °C to 50 °C

No material with a rating at both temperatures changes grade between 20 °C and 50 °C.

Substance

Name in the source (German)
Bremsflüssigkeit

Resistance table

Material20 °C50 °CRemark
Thermoplastics
HDPEA–
LDPEA–
PPAA
PVC RigidA–
PVC FlexibleC–
PMPAA
PolystyreneC–
SANDD
PolycarbonateDD
Acetal (POM)C*–
Nylon (PA)A–
Fluoropolymers
PTFEA–
FEPA*–
PVDFC*–
Elastomers
EPDMA–
Viton (FPM)DD
NBRDD
Metals
SS 316A*–
SS 304A*–
AluminiumA*–

* estimated rating, given in the source without a temperature

Not rated in the source, so not in the table: PETG, Polysulfone, ECTFE/ETFE, Silicone

Rating scale

A rating marked * is an estimate in the source, not a test result. An estimate is given as one value without a temperature.

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.

Chemicals with a similar resistance profile

Same 20 °C rating on the share of materials shown.