Why Can't Epoxy Resin Sleeves Be Used As Pressure-bearing Components?

In electrical equipment and industrial systems, epoxy bushing is primarily designed for insulation and support, rather than bearing pressure loads. While epoxy resin itself provides electrical insulation and basic mechanical support through its three-dimensional cross-linked structure, its inherent manufacturing structure lacks the geometry to form independent pressure-bearing cavities or withstand fluid pressure.

The chemical and physical properties of epoxy resin bushing limit its pressure-bearing capacity. Although thermosetting epoxy has high mechanical strength and heat resistance after curing, it is still a brittle material by nature. When subjected to internal or external pressure, it is prone to the propagation of micro-cracks, which leads to a decline in structural performance.

epoxy resin cast bushing typically lacks reinforcing layers or metal bushings, structural reinforcement elements commonly found in pressure-bearing component designs. In contrast, pressure-bearing components typically employ multi-layered metal or composite structures to distribute and transfer internal pressure loads. epoxy bushing manufacturer lacks such load-bearing design and material transition layers, failing to provide long-term resistance to hydrostatic pressure from fluids or gases.