Material & manufacturing guide
NBR vs EPDM: Which Rubber Material Should You Use?
NBR and EPDM address different material priorities. NBR is often considered when oil-related exposure is relevant, while EPDM is often considered for weather, water and outdoor environments. The actual compound and application should be reviewed before specification.
Short Answer
NBR and EPDM address different material priorities. NBR is often considered when oil-related exposure is relevant, while EPDM is often considered for weather, water and outdoor environments. The actual compound and application should be reviewed before specification.
How to Evaluate the Choice
The best option is the one that fits the actual assembly and service conditions. For custom-cut parts, material selection and manufacturing are linked: a drawing defines the profile, while the application determines whether a material construction is appropriate.
| Selection factor | Why it matters |
|---|---|
| Application environment | Include this in the project review so the material and conversion approach can be assessed. |
| Material compatibility | Include this in the project review so the material and conversion approach can be assessed. |
| Part geometry and thickness | Include this in the project review so the material and conversion approach can be assessed. |
| Compression or mounting requirement | Include this in the project review so the material and conversion approach can be assessed. |
| Quantity and production route | Include this in the project review so the material and conversion approach can be assessed. |
Application Examples
Sealing a panel, cushioning an assembly, spacing components and mounting a protective layer all create different material requirements. State the operating environment, contact surfaces and compression or mounting needs instead of relying on a generic product label.
Common Mistakes
- Selecting by name alone instead of application conditions
- Assuming a generic thickness works for every seal
- Leaving out quantity or mounting information from the drawing
Frequently Asked Questions
What should I send for a material review?
A drawing or sketch, the intended application, dimensions, material preference if known, thickness and quantity.
Can a prototype be reviewed first?
Prototype requirements can be reviewed alongside the material and geometry.