DSeal EPDM Seals: The Heart of Every Watertight Expansion Joint

June 22, 2026 · Products

You can have the strongest aluminium frame in the world — but if the seal fails, water gets through. The EPDM seal is the critical waterproofing element in every DSeal joint system.

What is EPDM?

Ethylene Propylene Diene Monomer — a synthetic rubber with exceptional weathering, UV, ozone, and temperature resistance. It is the standard material in premium automotive seals, roofing membranes, and industrial gaskets worldwide.

DSeal EPDM Seal Properties:

Temperature range: -40°C to +120°C
Shore A hardness: 60–80 (matched to movement requirements)
Tensile strength: >10 MPa
Elongation at break: >300%
UV and ozone resistance: Class A
Water absorption: <2%

DSeal EPDM seals are manufactured to consistent quality standards and are available as replaceable inserts, extending the life of the joint cover system without full replacement.

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