DOWSIL 732 is a one-component, room-temperature-vulcanizing silicone paste for industrial bonding and sealing. It is non-slumping, cures on exposure to ambient moisture through an acetoxy system, and forms a tough yet flexible rubber. Typical properties from the data shown include a hardness around Shore A 25, dielectric strength around 550 volts per mil, specific gravity near 1.04, and a continuous service window roughly from minus 60 to 180 degrees Celsius with brief peaks above that range.

• One-Part Formulation - DOWSIL™ 732 adopts a single-component design that eliminates the need for mixing, reducing preparation time and operational errors. Its uniform viscosity of 250,000–350,000 cP ensures stable dispensing and smooth flow through both manual and automated systems, resulting in consistent sealing quality.

  
  

• Room Temperature Cure - The sealant cures fully at ambient conditions of 23–25°C and 50% relative humidity, forming a rubber-like layer within 24 hours for a 2 mm thickness. This capability eliminates the need for heat curing, making it efficient for assembly lines and maintenance work.

  
  

• Acetoxy Cure System - Using an acetoxy reaction mechanism, the adhesive crosslinks into a strong silicone elastomer with tensile strength up to 2.1 MPa and elongation around 400%, providing robust mechanical performance in industrial environments.

  
  

• Non-Slumping Texture - With a flow rate below 3 mm under ASTM C639, the sealant maintains shape during vertical or overhead application. This stable consistency allows precise placement without sagging or dripping, even under gravity.

  
  

• Excellent Flexibility - Once cured, the elastomer accommodates ±25% joint movement without cracking. The elasticity effectively absorbs vibration, thermal expansion, and structural shifts, preventing material fatigue over time.

  
  

• Wide Temperature Range - The material withstands continuous operation from -60°C to +180°C and peak exposure up to +205°C. After 1,000 hours of heat aging, its tensile strength decreases by less than 10%, proving long-term thermal stability.

  
  

• Superior Adhesion - It bonds firmly to metals, glass, ceramics, and plastics, achieving over 1.8 MPa shear strength on aluminum and 1.5 MPa on polycarbonate. Strong adhesion minimizes detachment risk even under mechanical stress.

  
  

• Electrical Insulation - Featuring dielectric strength of 550 V/mil and volume resistivity exceeding 10¹⁵ Ω·cm, the cured silicone effectively isolates electrical components, ensuring safe insulation performance.

  
  

• Chemical Resistance - The cured layer resists exposure to oils, water, and solvents. Immersion tests at 80°C show less than 2% mass variation, confirming chemical durability for continuous industrial operation.

  
  

• UV and Aging Durability - After 1,000 hours of ASTM G154 UV testing, DOWSIL™ 732 maintains surface integrity and flexibility, showing excellent weathering stability for long-term outdoor applications.

• Automotive Components - Used for sealing headlights, valve covers, and body joints that endure high heat and vibration. It maintains adhesive strength up to 150°C, ensuring airtight joints in continuous automotive operation.

  
  

• Electronic Devices - Applied for potting and sealing control boards and connectors. Its 550 V/mil dielectric strength prevents current leakage and enhances protection for sensitive electronics.

  
  

• Household Appliances - Suitable for bonding glass, metal, and plastic components in ovens and dishwashers. The product resists high humidity and heat cycles up to 205°C without losing adhesion.

  
  

• Aerospace Components - Ideal for sealing equipment and panels exposed to low temperatures and pressure variations. Its flexibility at -60°C ensures stable sealing in aircraft structures.

  
  

• Construction Joints - Commonly used in glass curtain walls, window frames, and wall interfaces. The cured silicone provides excellent elasticity and waterproofing, preventing structural leaks caused by temperature changes.

  
  

• Food Equipment Sealing - Certified under FDA 177.2600, it is safe for sealing non-direct food contact areas. The sealant withstands repeated cleaning and steam exposure at 180°C, maintaining sanitary performance.

  
  

• Industrial Machinery Assembly - Utilized for sealing housings, pumps, and enclosures. Its specific gravity of 1.04 and stable viscosity ensure reliable bonding on metal and polymer surfaces, preventing leaks and mechanical wear.