Rating
| Concentration | 20 °C | 50 °C | Remark |
|---|---|---|---|
| technical grade | B | C |
Material comparison at 20 °C
Resistance overview
Viton (FPM) shows good but limited resistance (B) to Morpholine at technical grade at 20 °C. The material can be used in contact with this chemical, but minor effects such as slight swelling or a small reduction in mechanical properties may occur over extended exposure periods. Regular inspection of components in service is advisable. However, at 50 °C the resistance rating drops, indicating that temperature must be factored into the design. For heated applications, additional testing under actual service conditions is strongly recommended.
Application context
Morpholine is commonly encountered in water treatment and metal finishing. Viton (FPM) (Fluoroelastomer (FKM/FPM)) is an elastomer typically used for seals, O-rings, hoses and flexible connections. Because Morpholine is classified as corrosive, the choice of containment material is especially critical to prevent leaks, equipment damage, and safety hazards.
Practical recommendation
Viton (FPM) is suitable for use with Morpholine under normal conditions, but some minor effects on the material are expected over time. Periodic monitoring for swelling, softening, or weight change is recommended, especially for long-service components. Avoid prolonged exposure at elevated temperatures, as the resistance decreases further at 50 °C. For safety-critical or long-life applications, consider HDPE, LDPE, PP instead, which are rated A for this chemical.
Did you know?
In industrial practice, Viton (FPM) components exposed to Morpholine are typically inspected for swelling, discoloration, or loss of mechanical strength as early indicators of chemical attack.
Materials rated A or B at 20 °C
Based on the row for technical grade, 20 °C.
- Thermoplastics
- HDPE A, PP A, LDPE A, Acetal (POM) B
- Fluoropolymers
- PTFE A, PVDF A, FEP A
- Metals
- SS 316 A, SS 304 A, Aluminium A
About Viton (FPM)
Fluoroelastomer (Viton, FKM/FPM) resists fuels, oils and many acids. Ketones, esters, amines and hot water or steam attack it.
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.
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.