Low Durometer Silicone Rubber
Low durometer silicone rubber is a soft, flexible elastomer that offers excellent sealing and cushioning performance in demanding environments. In
October 3, 2025
Durometer hardness directly impacts a silicone component’s sealing force, flexibility, and mechanical durability.
Ranging from ultra-soft 10 Shore A to rigid 80 Shore A formulations, physical properties—including tensile strength, elongation at break, and compression set—dictate how a material behaves under load. Design engineers must balance durometer selection with mating surface tolerances and closure forces.
Explore our engineering guides on measuring durometer, evaluating compression set recovery, and selecting optimal physical properties for custom molded and extruded parts.
Low durometer silicone rubber is a soft, flexible elastomer that offers excellent sealing and cushioning performance in demanding environments. In
50 durometer silicone rubber represents a balanced midpoint—firm enough to maintain dimensional stability under compression, yet soft enough to conform