07/23/2026
Diaphragm failures typically come from a mismatch between the compound, the construction, and the application.
Six issues account for nearly every diaphragm failure we see:
1. chemical degradation from the wrong elastomer for the media
2. fatigue cracking from under-reinforced construction or a stress-concentrating geometry
3. extrusion from an inadequate bead or mounting design
4. thermal hardening or softening when a compound runs outside its rated range
5. wicking, where fluid migrates through the fabric layer at cut edges under pressure
6. delamination between the rubber and textile layers in fabric-reinforced designs
All of it is avoidable with the right material and construction review before engineering starts.
Learn more about how our team engineers and specifies diaphragms correctly to run for millions of cycles.
rubber-group.com/diaphragms
