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Company Name: Shanghai Siway Curtain Material CO., LTD.

Operational Address: No. 1, Puhui Road, Songjiang Dist., Shanghai, China (Mainland)

Tel:021-37682288-812

Email: info@siwaycurtain.com

  • Dow Corning 791
  • Dow Corning 791
  • Dow Corning 791
  • Dow Corning 791
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Dow Corning 791

Dow Corning 791 silicone weatherproofing sealant is a neutral cure high performance architectural grade silicone sealant. Specifically designed for architectural glazing such as masonry/metal cladding ,expansion and control joints, curtain wall weather seal and perimeter joints.

Product description

 Production description 

    Dow Corning 791 silicone weatherproofing sealant is a neutral cure high performance architectural grade silicone sealant. Specifically designed for architectural glazing such as masonry/metal cladding ,expansion and control joints, curtain wall weather seal and perimeter joints.

791

Advantages:

  · Ideal for expansion, connection, perimeter and other movement joints

  · Neutral cure suitable for use oncoated glass, galvanized steel, masonry and other porous and nonporous substrates

  · Extension/compression movement capability of up to ±50 percent of the original joint width

  · Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone

  · Excellent unprimed adhesion to a wide variety of construction materials and building components

  · Ease of application ready to use as supplied

  · Excellent rheology, low string upon gunning

Specification

Test

Property

Unit

Result

Uncured – As Tested at 50% RH and 23°C (73°F)

ASTM D-2202

Flow (sag or slump)

inches (mm)

0

ASTM C603

Extrusion Rate

g/minute

210

CTM 98B

Working Time

minutes

15

ASTM C679

Tack-free Time, 77F, 50% RH

minutes

35

 

Curing Time

days

7-14

GB 13477.2-2002

Specific Gravity

 

1.52

As Cured – After 7 days at 50% RH and 25°C (77°F)

ASTM D2240

Hardness

shore

30

ISO 7389

Elastic recovery ability

%

>90%

ASTM C719

The displacement  ability

%

±50%

ISO 11600

Sealant grade

Low

modulus

25LM/F and

G

As Cured – After 28 days at 50% RH and 23°C (73°F)

Streth adhesion port12x12x50mmISO8339

0.5x0.5x2 inchASTM C1135

 

At 25% extension

MPa

0.30

 

Psi

40

 

At 50% extension

MPa

0.35

 

Psi

60

 

At 100% extension

MPa

0.40

 

Psi

70

 

Ultimate Tensile Strength

MPa

0.75

 

Psi

120

 

Ultimate elongation

%

460

ASTM C711

Temperature resistance after curing

C

-50 to 150

 

F

-58 to 302

       

Application

   Dow Corning® 791 Silicone Weatherproofing Sealant is a specified, premium performance weather sealing product specifically designed for general glazing and weather sealing in curtain wall and building facades.