Dow Corning® 993 Structural
Glazing Sealant
FEATURES
• Meets European standard for structural glazing as developed by EOTA working groups
• Excellent adhesion to a wide range of substrates including coated, enamelled and reflective glasses, anodised and polyester paint coated aluminium and stainless steel
• High level of mechanical properties
• Odorless and non-corrosive cure
• Excellent stability through wide temperature range: -50ºC to 150ºC
• Resistant to ozone
• Stable viscosity for A & B components, no heating required
• Suitable for use in impact-resistant window systems in new construction and retrofit in existing buildings
BENEFITS
• Structural capability
• The cured product exhibits excellent weathering characteristics, and a high resistance to ultra-violet radiation, heat and humidity
• Lot matching of base and curing agent not necessary
• Different grey shades available (please refer to our color card)
Two-part silicone rubber
APPLICATIONS
• Two-part silicone sealant for structural glazing
TYPICAL PROPERTIES
Specification Writers: These values are not intended for use in preparing specifications. Please contact your local Dow Corning sales office or your Global Dow Corning Connection before writing specifications on this product.
Test method*
Property
Unit
Value
Base: as supplied
Color and consistency
Viscous white paste
Specific gravity
1.32
Viscosity (100s-1)
mPa.s
150,000
Curing agent: as supplied
Consistency
Viscous paste
Specific Gravity
- Catalyst black
1.05
- HV/GER black
1.06
- Clear & grey catalyst
1.01
Viscosity (20s-1)
- Catalyst black
mPa.s
25000
- HV/GER black
mPa.s
100000
- Clear & grey catalyst
mPa.s
25000
ASTM D93
Flash point - closed cup
ºC
28
As mixed
Color and consistency
White / black / grey** non-slump paste
Specific gravity
1.30
Viscosity (100s-1)
mPa.s
40,000
Working time (25ºC/77ºF, 50% R.H.)
minutes
10 to 30
Tack-free time (25ºC/77ºF, 50% R.H.)
minutes
80 to 100
Corrosiveness
Non-corrosive
As cured - after 7 days at 25°C and 50% RH
ISO 8339
Tensile strength
MPa
0.95
ASTM D624
Tear strength
kN/m
6.0
ISO 8339
Elongation at break
%
130
ASTM D2240
Durometer hardness, shore A
40
Sealant dynamic design load
Pa
140,000
Sealant static design load
Pa
15,000
Service temperature range
ºC
-50 to +150
*ASTM: American Society for Testing and Materials.
ISO: International Standardisation Organisation.
**Please refer to our color card (ref. 62-1633a-01).