Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow SYLGARD 528 Silicone Rubber

Dow SYLGARD 528 Silicone Rubber is a two-part platinum-cured elastomer offering excellent thermal stability, low compression set, and high elongation. Ideal for precision molding, encapsulation, and medical device fabrication, it cures at room temperature or with mild heat. Known for its optical clarity, biocompatibility, and consistent reproducibility across batches.
  • dow sylgard 528 silicone rubber_6f97f0a7
  • dow sylgard 528 silicone rubber_6f97f0a7

Features Of Dow SYLGARD 528 Silicone Rubber

  1. Two-part, addition-cure liquid silicone rubber with excellent flowability and low viscosity for precise mold filling.

  2. High thermal stability and long-term performance across a wide temperature range (–60 °C to +200 °C).

  3. Low compression set and outstanding elasticity for reliable sealing and cushioning in dynamic applications.

  4. Biocompatibility compliant with USP Class VI and ISO 10993-5 standards for medical device contact.

  5. Minimal byproduct formation during cure—no corrosive or volatile compounds released.

Typical Applications Of Dow SYLGARD 528 Silicone Rubber

  1. Medical tubing and catheter components requiring flexibility and biocompatibility.

  2. Seals and gaskets for automotive sensors and powertrain modules exposed to high temperatures.

  3. Encapsulants and potting compounds for LED lighting assemblies and electronics protection.

  4. Soft-touch overmolding on plastic and metal substrates in consumer healthcare devices.

  5. Custom molded parts for industrial fluid handling systems requiring chemical resistance.

Specifications Of Dow SYLGARD 528 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component liquid system (Part A + Part B)
AppearanceClear, low-viscosity liquids (Part A: colorless; Part B: pale amber)
Primary ApplicationsMedical devices, automotive sensors, LED encapsulation, soft-touch overmolding
Key FeaturesLow compression set, high elongation (>400%), excellent tear strength
BenefitsRoom-temperature or elevated-temperature curing; reproducible dimensional stability
Regulatory ComplianceUSP Class VI, ISO 10993-5, RoHS compliant
Cure MechanismAddition reaction (hydrosilylation), no peroxide or condensation byproducts


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