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

Wacker ELASTOSIL 4500 One-Component Silicone Sealant

Wacker ELASTOSIL 4500 is a one-component, platinum-catalyzed silicone sealant offering rapid room-temperature curing, excellent adhesion to glass/metal/plastics, low shrinkage, and outstanding thermal stability from −60°C to +200°C—ideal for precision electronics, automotive, and medical device assembly.
  • wacker elastosil 4500 one component silicone sealant_8357e4ca
  • wacker elastosil 4500 one component silicone sealant_8357e4ca

Features Of Wacker ELASTOSIL 4500 One-Component Silicone Sealant

  1. Room-temperature vulcanizing (RTV) silicone sealant with moisture-cured, one-component chemistry.

  2. Excellent adhesion to common substrates including glass, aluminum, stainless steel, and painted surfaces without primer.

  3. High elasticity and permanent flexibility after curing — maintains performance from –60 °C to +180 °C.

  4. Low modulus formulation minimizes stress on bonded components and accommodates thermal and mechanical movement.

  5. Non-corrosive, acetoxy-cure system with low odor and rapid surface cure under ambient humidity conditions.

Typical Applications Of Wacker ELASTOSIL 4500 One-Component Silicone Sealant

  1. Sealing and bonding in automotive lighting assemblies (headlamps, taillamps).

  2. Encapsulation and edge sealing of LED modules and electronic control units.

  3. Structural bonding and gap filling in precision optical and sensor housings.

  4. Assembly sealing for medical device enclosures requiring biocompatibility support.

  5. Industrial equipment gasketing where vibration damping and long-term weather resistance are critical.

Specifications Of Wacker ELASTOSIL 4500 One-Component Silicone Sealant

Chemical TypeAcetoxy-cured, one-component polydimethylsiloxane (PDMS)
Product FormPaste-like, thixotropic paste in cartridge (310 mL)
AppearanceOpaque white to off-white, homogeneous paste
Primary ApplicationsLighting, electronics encapsulation, precision industrial assembly
Key FeaturesRTV, low modulus, high elongation (>200%), excellent adhesion
BenefitsNo mixing required; fast tack-free time (~15–30 min); long shelf life (12 months unopened at 25 °C)
Curing MechanismMoisture-cured at room temperature
Storage ConditionsStore in cool, dry place below 25 °C; protect from frost and direct sunlight


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