Product

High Consistency Rubbers (HCRs)

March 4, 2022

PLATINUM CURE

Platinum cure high consistency rubbers (HCRs) have the consistency of clay and well-suited for fabrication processes such as extruding, calendering and compression or transfer molding into a wide range of parts.

Applications

NuSil HCRs can be used to extrude rod and ribbon profiles and tubing for medical applications. They can also be calendered into sheets for die-cutting or molded into parts, such as balloons, gaskets and O-rings.

Key properties and considerations

‒ Green strength: ideal for extrusion processes

‒ Very high mechanical properties and low modulus compared to other  elastomer systems

‒ Two-part curing system

‒ No byproducts generated from the curing process

‒ Post-cure is optional

PEROXIDE CURE

Peroxide cure high consistency rubbers (HCRs) have a long history in implant applications and are similar in consistency to platinum cure HCRs. NuSil offers peroxide cure HCRs in both uncatalyzed and pre-catalyzed forms.

Uncatalyzed

NuSil uncatalyzed peroxide HCR systems offer the flexibility of using your preferred peroxide catalyst. They do not contain vinyl- or non-vinyl-specific peroxide catalysts as supplied.

Pre-catalyzed

Our pre-catalyzed peroxide curing HCRs are one-part systems that contain a dichlorobenzoyl peroxide catalyst and are ready for use.

Key properties and considerations

‒ Green strength: ideal for extrusion processes

‒ Indefinite work time

‒ Low modulus compared to other elastomer systems

‒ One- or two-part systems available

‒ Heat required to cure