Electroinsulating Rubber Gaskets
Industrial electroinsulating gaskets, custom manufactured to technical drawing or sample, with high electrical resistivity for preventing accidental contact with live parts. The recommended solution for railway and electrical applications.
Technical Specifications
Indicative values for electroinsulating gaskets. Exact parameters are determined according to the application and the dimensions in the technical drawing.
| Parameter | Value |
| Elastomer base | Special SBR / NR |
| Shore A hardness | 50–70 |
| Working temperature | -30°C … +100°C |
| Tensile strength | ≥ 9 MPa |
| Electrical resistivity | > 10¹⁰ Ω·cm |
| Ozone / UV resistance | Good |
| Steam resistance | Moderate |
| Reference railway standard | SR EN 45545 |
| Other standards | SR ISO 37, ISO 48-4 |
Applications
Railway
Electroinsulating components for rolling stock cabins/panels.
Electrical installations
Insulation in low- and medium-voltage panels and equipment.
Industrial equipment
Reliable electrical insulation with moderate mechanical strength.
Frequently Asked Questions
What is an electroinsulating gasket and when is it used?
It is a gasket formulated for high electrical resistivity (>10¹⁰ Ω·cm), used where accidental contact with live parts must be prevented, especially in railway and electrical applications.
Which railway standard do Geola Prod's electroinsulating gaskets comply with?
We refer to SR EN 45545, the European standard for the fire behaviour of materials in railway vehicles. Geola Prod SRL holds company-level AFER approval; the compliance of each final part with the railway project is established together with the rolling stock manufacturer.
What is the difference in resistivity compared to the raw electroinsulating compound?
The raw compound can reach over 10¹² Ω·cm in laboratory testing; the finished gasket, depending on geometry and thickness, is guaranteed at over 10¹⁰ Ω·cm — a typical value for the finished part, not for the raw material.
Can you formulate an electroinsulating gasket with specific parameters?
Yes — we start from the required hardness, shape and resistivity and manufacture the gasket according to the technical drawing supplied.
Request a Quote for Electroinsulating Gaskets
Send us your technical drawing or sample and we will provide a complete quote as quickly as possible.