A-135 Factor II Silicone 36A (HCR) High Consistency Rubber

A-135 Silicone Gum (Heat Cure HCR, Shore A 36)

A-135 is a platinum-cure, high consistency rubber (HCR) silicone gum offering a balance of flexibility and strength with a Shore A 36 durometer. As part of our HCR line, it delivers excellent physical properties and dimensional stability, making it well suited for detailed fabrication and durable silicone components.

In its gum form, A-135 allows technicians to sculpt, shape, and laminate directly into the material prior to cure. It bonds well to a variety of substrates and maintains low to moderate shrinkage, supporting consistent results in finished parts.

 Final cure is accelerated through heat.

Product Features

• Shore A 36 silicone gum for balanced flexibility and strength

• Platinum-cure (addition cure) system

• High consistency (gum) form for sculpting and shaping

• Good mechanical properties and durability

• Low shrinkage (~2.4%)

• Bonds well to multiple substrates for lamination

• Heat cure required

Processing Notes

• Supplied as a two-part system (Part A & Part B)

• Mix equal parts thoroughly prior to use

• Two-roll mill required for proper blending and pigment incorporation

Typical Applications

• Sculpted silicone components

• Laminated silicone structures

• Applications requiring a balance of flexibility and strength

Physical Properties (Typical)

• Durometer (Shore A): 36

• Tensile Strength: ~1200 psi

• Elongation: ~1100%

• Modulus @ 200%: ~178 psi

• Tear Strength: ~201 ppi

• Linear Shrinkage: ~2.4%

A versatile HCR silicone option for fabrication and processing applications, available while supplies last.