Momentive RTV142 White Silicone Adhesive Sealant 150ml Cartridge

Description

Momentive RTV142 is a white, one-component silicone adhesive sealant formulated for critical electronic, aerospace, and sealing applications that demand low volatility and high reliability. Curing with atmospheric moisture, it releases methyl alcohol vapors during cure — which are low odor and non-corrosive to metals, ensuring safe application on copper, aluminum, steel, and sensitive alloys.

Its low volatility ensures minimal condensable material deposition, making it compliant with NASA’s ASTM E595 standard for low outgassing, a key requirement for spacecraft, satellite, and defense electronics.

RTV142’s thixotropic consistency allows use on vertical or overhead surfaces without flow or sag, while maintaining flexibility and mechanical integrity across wide temperature ranges. The cured elastomer offers excellent dielectric properties, weather resistance, and chemical stability, ideal for long-term environmental exposure in aerospace, electronic, and industrial environments.

Uses of the Product

• Electronic adhesive and gasketing for sensitive components.

• Aerospace and satellite assembly where low outgassing is critical.

• Defense electronics and military-grade sealing.

• Weatherproofing and protective sealing of enclosures.

• High-voltage insulation for electrical and power systems.

Applications

• Aerospace & Defense Systems

• Satellite and Spacecraft Manufacturing

• Electronics & Power Equipment

• Industrial and Instrumentation Assemblies

• High-Reliability Sealing and Insulation

Technical Specifications

Product Type: One-part, room temperature cure silicone sealant
Color: White
Form: Thixotropic paste
Specific Gravity: 1.09
Tack-Free Time: ~4 hours @ 25 °C, 50% RH
Full Cure: ~10 days @ 25 °C (accelerates with heat and humidity)

Mechanical Properties (Cured 10 days @ 25 °C):

• Hardness: Shore A 34

• Tensile Strength: 550 psi (38.5 kg/cm²)

• Elongation: 400%

• Tear Strength: 50 lb/in (9 kg/cm)

• Shear Strength: 300 psi (21 kg/cm²)

• Peel Strength: 60 lb/in (10.5 kg/cm)

Thermal Properties:

• Operating Temperature: -60 °C to +204 °C (-75 °F to +400 °F)

• Coefficient of Expansion: 2.7 × 10⁻⁴ cm/cm/°C

• Thermal Conductivity: 0.21 W/m·K

Electrical Properties:

• Dielectric Strength: 20 kV/mm (500 V/mil)

• Dielectric Constant (60 Hz): 2.8

• Dissipation Factor (60 Hz): 0.001

• Volume Resistivity: 4.5 × 10¹⁵ Ω·cm

Low Outgassing (ASTM E595):

• Total Weight Loss (TWL): 0.22%

• Volatile Condensable Material (VCM): 0.05%

Packaging: 150 ml Cartridge
Shelf Life: 12 months (unopened, stored below 30 °C)

Why Buy From Maisam Dubai

• Supplier of genuine Momentive RTV silicones.

• Low outgassing, non-corrosive sealants for aerospace and defense use.

• Proven NASA-certified performance (ASTM E595).

• Competitive bulk pricing and fast delivery across GCC.

• Technical expertise in RTV silicone applications for electronics and aerospace.

FAQs

Q1. What is Momentive RTV142 used for?
It’s used for critical sealing and gasketing in aerospace, defense, and electronic systems requiring low outgassing.

Q2. Is RTV142 corrosive to metals?
No, RTV142 is non-corrosive and safe for copper, aluminum, and other sensitive alloys.

Q3. Does it meet NASA outgassing standards?
Yes, every batch meets NASA ASTM E595 for low volatility and outgassing.

Q4. What is the curing method?
It cures at room temperature by reacting with atmospheric moisture, releasing methyl alcohol vapors.

Q5. What temperature range can it withstand?
It operates between -60 °C and +204 °C, with excellent flexibility and insulation properties.

Q6. Do you supply across GCC?
Yes, Maisam Dubai supplies RTV142 across UAE, Saudi Arabia, Oman, Qatar, Bahrain, and Kuwait.

Call to Action

Looking for Momentive RTV142 White Silicone Adhesive Sealant in the GCC?
📞 Phone: +971 52 167 2252
📩 Email: sales@maisamdubai.com
🌍 Serving: UAE, Saudi Arabia, Oman, Qatar, Bahrain, Kuwait, and Dubai