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

DOWSIL 798 Clean Room Silicone Adhesive

DOWSIL 798 Clean Room Silicone Adhesive is a low-outgassing, acetoxy-cure silicone sealant engineered for ISO Class 5–8 cleanroom environments. It offers excellent adhesion to glass, stainless steel and plastics, rapid tack-free time, and UL 94 HB flammability rating—ideal for semiconductor, pharma and medical device assembly.
  • dowsil 798 clean room silicone adhesive_457c8063
  • dowsil 798 clean room silicone adhesive_457c8063

Features Of DOWSIL 798 Clean Room Silicone Adhesive

  1. Ultra-low ionic and metallic impurity content, meeting stringent ISO Class 1–5 cleanroom requirements.

  2. Acetoxy-cure silicone chemistry enabling rapid room-temperature cure with minimal volatile byproducts.

  3. Excellent adhesion to glass, stainless steel, anodized aluminum, and common cleanroom plastics without primer.

  4. Non-corrosive to sensitive electronic components and optical surfaces after full cure.

  5. Compliant with SEMI F57 and ASTM D3405 standards for semiconductor-grade sealants.

Typical Applications Of DOWSIL 798 Clean Room Silicone Adhesive

  1. Sealing and bonding of HEPA/ULPA filter frames in pharmaceutical and biotech cleanrooms.

  2. Assembly of wafer handling fixtures and photomask storage cabinets in semiconductor fabrication facilities.

  3. Mounting of precision optics and sensors in analytical instrumentation used in controlled environments.

  4. Bonding of laminar flow hood components and glovebox viewports requiring particle-free integrity.

Specifications Of DOWSIL 798 Clean Room Silicone Adhesive

Chemical TypeAcetoxy-curing silicone polymer
Product FormThixotropic paste, single-component
AppearanceOff-white, uniform paste
Primary ApplicationsCleanroom sealing, bonding, and gasketing
Key FeaturesLow outgassing, non-corrosive, ultra-low sodium/potassium/chloride
BenefitsMinimizes particle generation and surface contamination in critical environments
Cure MechanismMoisture-cured at ambient temperature
Storage Stability12 months unopened at 5–25°C


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