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

Dow XIAMETER RTV-4133-M2 Silicone Rubber

Dow XIAMETER RTV-4133-M2 is a two-part addition-cure liquid silicone rubber offering excellent flow, low viscosity, and rapid room-temperature vulcanization. Ideal for precision molding, encapsulation, and medical device fabrication, it delivers high tear strength, biocompatibility per ISO 10993, and thermal stability from −65°C to 200°C.
  • dow xiameter rtv 4133 m2 silicone rubber_54e54180
  • dow xiameter rtv 4133 m2 silicone rubber_54e54180

Features Of Dow XIAMETER RTV-4133-M2 Silicone Rubber

  1. Two-part, platinum-catalyzed addition-cure silicone rubber system offering excellent thermal stability and low compression set.

  2. Fast room-temperature vulcanization (RTV) with adjustable pot life and cure speed via catalyst dosage control.

  3. High elongation and tear strength for durable, flexible elastomeric parts after full cure.

  4. Low viscosity A-side and B-side components enable easy mixing, degassing, and mold filling—even for intricate geometries.

  5. UL 94 HB rated and compliant with ISO 10993-5 for cytotoxicity, supporting medical device prototyping and encapsulation.

Typical Applications Of Dow XIAMETER RTV-4133-M2 Silicone Rubber

  1. Prototyping and low-volume production of medical device housings and wearable sensor enclosures.

  2. Encapsulation and potting of electronic assemblies requiring thermal cycling resistance and electrical insulation.

  3. Manufacturing of soft-touch grips, gaskets, and seals for automotive interior components.

  4. Tooling and master model replication in rapid prototyping and foundry pattern making.

  5. Flexible molds for casting polyurethane, epoxy, and low-melt alloys in industrial and artistic applications.

Specifications Of Dow XIAMETER RTV-4133-M2 Silicone Rubber

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component liquid system (Part A + Part B)
Appearance (Uncured)Part A: Translucent, low-viscosity liquid; Part B: Clear to pale amber liquid
Primary ApplicationsEncapsulation, potting, molding, gasketing, and prototyping
Key FeaturesRTV at room temperature, excellent flow, low shrinkage, high elasticity
BenefitsNo by-products during cure, minimal odor, reproducible mechanical properties
Cure SystemAddition reaction (hydrosilylation), inhibited for controlled working time
Storage Stability12 months unopened at ≤25°C; store Part B protected from moisture


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