Strong Shore A Polyaddition Silicone 28-32, 500 g

Strong Shore A 28-32 polyaddition silicone for podiatry. 

An elastomer based on a special silicone polymer developed for the manufacture of corrective, strong and durable digital orthoses.

Thanks to its high plasticity, excellent mechanical properties and increased hardness, this polyaddition podiatric silicone allows for the creation of orthoses with high support, containment and corrective capabilities.

Function: Strong Silicone is particularly suitable for the manufacture of corrective toe orthoses requiring greater containment and stabilisation of the toes. Its hardness enables a corrective action to be exerted, promoting the maintenance of correct toe alignment and the control of structural alterations of the foot.

It is ideal for corrective orthoses, realignment, containment and compensation devices intended for patients requiring firmer, long-lasting support.

It is the ideal solution for professionals seeking a material with high corrective capacity, without compromising on the flexibility and workability typical of polyaddition silicones.

Curing: curing takes place at room temperature through a rapid polymerisation reaction that leads to the formation of the final polymer. This process guarantees linear shrinkage close to zero, ensuring dimensional stability, precision during fabrication and the long-term durability of the orthosis.

Linear shrinkage: linear shrinkage refers to the dimensional change in the silicone following curing. In Silicone Strong, it is approximately 0.1%, an extremely low value that allows the orthosis to retain the shape modelled by the professional almost unchanged. This ensures greater precision, dimensional stability and a better fit to the patient’s foot. 

Pot Life: the working time available for shaping the orthosis is one of the most important aspects when working with silicone. During this time, the material retains the correct consistency for processing after the two components have been mixed. In Strong Polyaddition Silicone, the pot life is approximately 1 minute and 30 seconds. This means that, once mixed, the professional has the time needed to blend the product, mould the orthosis and position it correctly on the patient. 

Catalysis: after mixing, the silicone begins the catalysis process, increasing in consistency until it sets completely in less than 5 minutes. During this phase, the polymerisation reaction proceeds until the polymer is fully formed, which is responsible for the orthosis’s elastic properties and final stability. The correct balance between workability and curing speed allows for the creation of precise and functional orthoses, optimising operating times in the podiatry practice.

Mixing: mixing in a 1:1 ratio ensures the correct balance between the reactive components of the system. Precise dosing promotes a complete polymerisation reaction, allowing the formation of a stable and homogeneous elastomeric structure. Alterations to the mixing ratios could affect the curing times and the final mechanical properties of the material, compromising the performance of the orthosis produced.

Functional characteristics

Strong polyaddition silicone

Ideal for corrective and realignment foot orthoses 

High capacity for support, containment and stabilisation of the toes

High flexibility, strength and durability

Excellent mechanical properties and dimensional stability

No significant shrinkage after curing

Easy to mould

Cures at room temperature

Mixing ratio 1:1

Fast working time

Professional addition-cure silicone formulation

Two-component dual polyaddition silicone for custom orthoses

Package contents

• 1 x 250 ml jar of Base B
• 1 x 250 ml jar of Activator A
• 2 measuring spoons