3M 08663 Super Silicone Adhesive/Sealants

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Description for 3M 08663 Super Silicone Adhesive/Sealants

A paste-like, one-component material which cures to a tough, rubbery solid when exposed to moisture in the air.

Chemical Resistance	Chemical Resistance: Fluid Resistance: Good Water Resistance
Application Type	Bond, Seal
1 Part or 2 Part	1-Part
Material Form	Paste
Substrate	ceramic, fabrics, Vinyl, glass, clean metal, many plastics, Rubber, wood
Industry	Caulking joints to provide a water and dust barrier, Automotive trim, Filleting joints to provide a water and dust barrier
Manufacturer	3M
Chemistry	Silicone
Application Method	Spatula
Cure Method	Moisture
Cure Temperature (°C)	25
Cure Time (min)	Fast, 1,440
Viscosity (cPs)	Non-sagging Paste
Color	Clear
Ozone Resistance	Excellent ozone resistance
High Temperature Resistance (°C)	High Temperature Resistance, 204
Low Temperature Resistance (°C)	-60
Other Resistance	Excellent Extreme resistance
Density (g/cm³)	8.5 (lbs/Gallon) (Appx.)

Best Practices for 3M 08663 Super Silicone Adhesive/Sealants

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Technical Data for 3M 08663 Super Silicone Adhesive/Sealants

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Overview

Chemical Resistance
- Chemical Resistance : Fluid Resistance : Water Resistance - Good Water Resistance
Application Type
- Adhesive - Bond
- Sealant - Seal
1 Part or 2 Part
- 1-Part
Material Form
- Paste
Substrate
- Ceramic
- Glass
- Metal - clean metal
- Plastic - many plastics
- Vinyl
- Rubber
- Wood
- Fabric - fabrics
- Other - Natural and synthetic fiber, Painted surfaces, Many Substrates
Industry
- Other Transportation - Drip rails
- Automotive - Automotive trim
- Joints - Filleting joints to provide a water and dust barrier, Caulking joints to provide a water and dust barrier
- Other - Taillight and sunroof assemblies, Vinyl roof top fabrics
Chemistry
- Silicone
Application Method
- Spatula/Trowel - Spatula
- Other - Wooden paddle
Cure Method
- Moisture / Condensation Cure - Moisture
Color
- Clear / Transparent - Clear

Specifications

Cure Specs

Cure Temperature (°C)	25	Test Method
Cure Time (min)	Fast, 1,440	Test Method
Viscosity (cPs)	Non-sagging Paste

Bond Strength

Tensile Strength (psi)	325

Material Resistance

Ozone Resistance	Excellent ozone resistance
Environmental Resistance	Excellent weather resistance
High Temperature Resistance (°C)	High Temperature Resistance, 204
Low Temperature Resistance (°C)	-60
Moisture/Humidity Resistance	Excellent moisture resistance
Other Resistance	Excellent Extreme resistance
Vibration Resistance/Shock Resistance	Excellent vibration resistance

Hardness

Shore A Hardness	25	Test Method
Elongation (%)	550	Test Method
Flexibility	Flexible

Other Properties

% Solids (%)	100	Test Method
Density (g/cm³)	8.5 (lbs/Gallon) (Appx.)

Business Information

Shelf Life Details	Store at room temperature. Rotate stock on a "first-in, first-out" basis. When stored at the recommended conditions in original, unopened containers, this product has a shelf life of 18 months.
Shelf Life Temperature (°F)	77
Shelf Life (mon)	18

Best Practices for 3M 08663 Super Silicone Adhesive/Sealants

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1. Surface Preparation
  
  Thoroughly clean surfaces to be bonded. Rubber surfaces should be abraded and wiped clean.
2. Application
  
  Apply silicone to area that is to be sealed or bonded. The paste-like consistency makes it easy to tool with a spatula or wooden paddle.
3. Curing
  
  Super Silicones cure from the outside in. At conditions of 75°F and 50% RH, they form a tack free skin within 20 minutes. Tooling is not practical after the skin begins forming. Cure time is affected by humidity, degree of confinement, and thickness of the adhesive/sealant bead. Lower humidity and/or temperature will extend the cure time. Higher humidity and/or temperature will reduce the cure time. In applications where the adhesive/sealant is confined during cure, the time required for proper cure is generally lengthened.
Comparable Materials for 3M 08663 Super Silicone Adhesive/Sealants

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Spec Engine^® Results
- 3165 Fast Tack RTV Adhesive/Sealant(Dow)
  Fast tack-free time; noncorrosive; good green strength; good room-temperature adhesion to most substrates; non-flow.
- 732 Multi-Purpose Sealant(Dow)
  One-part; non-slumping RTV paste, good resistance to weathering, moisture and temperature extremes; cures to a tough rubbery solid.
- 08662 Super Silicone Adhesive/Sealants(3M)
  A paste-like, one-component material which cures to a tough, rubbery solid when exposed to moisture in the air. It will adhere to clean metal, glass, wood, ceramic, natural and synthetic fiber, painted surfaces, and many plastics.
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