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TREMCO SPECTREM 2 SILICONE SEALANT 10oz

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Details

Tremco Spectrem 2 is a high-performance, single-component, neutral-cure, medium-modulus silicone sealant for 2-sided structural glazing.

 

Tremco Spectrem 2 Product Data Sheet

Tremco Spectrem 2 Color Chart

 

Basic Uses
Spectrem 2 is ideal for a variety of perimeter caulking and glazing applications, including 2-sided structural glazing. Spectrem 2 may be used on substrates such as aluminum, glass, steel, painted metal, plastic, stone, concrete and brick.

Features and Benefits

  • With medium modulus, can be used as a structural tensile bead and weather sealant.
  • Offering excellent adhesion to a variety of substrates including glass and metal, a single product can be used for a variety of applications on the
  • same job from 2-sided structural glazing to perimeter caulking and joint filling.
  • Resistance to driving rain, ozone, ultraviolet light, and temperature extremes safeguards against water penetration with exceptional weatherability in all climate zones.
  • Wide variety of colors to choose from with custom colors and color matching also available for a particular project.
  • No mixing required, so product is always ready to use for immediate application with conventional caulking equipment.
  • Greenguard Gold certification ensures safety for use in the most sensitive indoor environments including hospitals and schools.

Limitations

  • Do not apply to damp or contaminated surfaces.
  • Use with adequate ventilation.
  • Not intended for continuous water immersion.
  • Only black silicones are recommended for structural glazing applications.

Substrate Preparation
Surfaces must be sound, clean, and dry. Contact surfaces should be free of loose dirt, dust, oils, and any other contaminants. Tremco recommends that air temperatures be 40 °F (5 °C) or above before applying any sealant. If colder weather is imminent, please refer to the Tremco Guide for Cold Weather Applications.

Applicable Standards

  • Spectrem 2 meets or exceeds the requirements of the following specifications:
  • ASTM C920 Type S, Grade NS, Class 50, Use NT, M, G, A and O
  • ASTM C1248 Standard Test Method for Staining of Porous Substrate by Joint Sealants
  • ASTM C1184 Standard Specifications for Structural Silicone Sealants
  • U.S. Federal Specification TT-S-001543A (COM-NBS) Class A
  • CAN/CGSB 19.13-M87
  • U.S. Federal Specification TT-S-00230C (COM-NBS) Class A, Type II
  • Black meets all of AAMA 802.3-92 (Type I and II), 805.2-94 (Group C), and 808.3-92
  • Conforms to ASTM C1184 Use G and O (Aluminum)

Application
Spectrem 2 is easy to apply with conventional caulking equipment. Fill joint completely and tool. At 75 ˚F (23.9 ˚C), 50% RH, a durable skin will form typically within fewer than 10 minutes. 

Joint Design
May be used in any joint designed in accordance with accepted architectural/engineering practices. Joint width should be 4 times anticipated movement, but not less than 1/4” (6 mm) wide.

Joint Backing
Approved structural glazing tapes, such as SGT 900 Series Tape, compatible silicone, or SCR spacer gaskets are approved to promote properly dimensioned tensile beads when used in 2-sided structural glazing applications. When Spectrem 2 sealant is used in non-structural glazing applications, closed-cell polyethylene backer rod is preferred as joint backing to control depth of sealant bead. Where depth of joint will prevent use of joint backing, an adhesive-backed polyethylene tape should be installed to prevent threesided adhesion. Joint backing must be dry at time of sealant application.

W = Sealant width, D = Sealant depth, C = Contact area.

Expansion joints: The minimum joint width (W) and sealant contact depth (C) of any silicone sealant application is 1/4” by 1/4” (6.35 mm by 6.35 mm). It is recommended that the sealant joint depth (D), when measured from the face of the sealant bead to the crown of the backer rod, be equal to one-half the sealant joint width (W), known as 2:1 width-to-depth joint ratio. For silicone sealants, the minimum sealant joint depth (D) at crown of backer rod is 1/8” (3 mm) and the maximum sealant joint depth at crown of backer rod is ½” (13mm). For joints that are wider than 1" (25 mm), contact one of our technical services representative.

Window perimeter joints: For fillet beads, or angle beads around windows and doors, the sealant should exhibit a minimum sealant contact depth [C] of 1/4" (6.34 mm) onto each substrate. Proper joint backing or bond breaking must be implemented to allow the sealant to perform when exposed to joint movement.

STRUCTURAL GLAZING: Special consideration must be taken when using Spectrem 2 in structural glazing applications; therefore, the above sealant dimension guidelines do not apply in these applications. Consult Technical Services for structural glazing reviews and recommendations.

Typical Physical Properties

PROPERTY TEST METHOD TYPICAL VALUES
Flow, sag or slump inches ASTM C639  Nil
Sag ASTM D2202 0.03” (0 mm to 0.1 mm)
Tack free time ASTM C679  20 to 40 min
Tooling Time Skin Formation 10 to 15 min
As Cured: After 14 days at 77 °F (25 °C), 50%RH
Cyclic Movement  ASTM C719 ±50% 
Elongation ASTM D412  235 to 260%
Hardness (shore A) ASTM C661 37 to 40
Peel Strength Aluminum and Glass ASTM C794 16 to 22 pli (2.81 to 3.86 kN/M)
Staining of Porous Substrates White Marble Primed & Unprimed  ASTM C1248  No stain
Tear strength, die ("C") ASTM D624 35 to 40 pli (6.14 to 7.02 kN/M)
Tensile Strength at 100% Elongation ASTM C1135 90 to 100 psi (0.62 to 0.69 MPa)
Tensile Strength at Max Elongation ASTM D412 20 to 230 psi (1.52 to 1.59 MPa)
As Cured: After 21 days at 77 °F (25 °C), 50%RH
Ultimate Elongation ASTM C1135 261% 
Tensile Strength STM C1135 123 psi (0.85 MPa)

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Rating
Joint Size D x W Inches1 Gallon10.3 Fluid Ounce Tube20 Fluid Ounce Sausage2 Gallon Pail4.5 Gallon Pail
3/16 x 1/4 411 33 64 821 1848
3/16 x 3/8 274 22 43 548 1232
3/16 x 1/2 205 16 32 411 924
3/16 x 5/8 164 13 26 329 739
3/16 x 3/4 137 11 21 274 616
           
1/4 x 1/4 308 25 48 616 1386
1/4 x 3/8 205 16 32 411 924
1/4 x 1/2 154 12 24 308 693
1/4 x 5/8 123 10 19 246 554
1/4 x 3/4 103 8.3 16 205 462
1/4 x 1 77 6.2 12 154 346
           
3/8 x 3/8 137 11 21 274 616
3/8 x 1/2 103 8.3 16 205 462
3/8 x 5/8 82 6.6 13 164 370
3/8 x 3/4 68 5.5 11 137 308
3/8 x 1 51 4.1 7.9 103 231
3/8 x 1.5 34 2.7 5.3 68 154
3/8 x 2 25 2 3.9 51 115
3/8 x 3 17 1.4 2.6 34 77
           
1/2 x 1/2 77 6.2 12 154 346
1/2 x 5/8 62 5 9.7 123 277
1/2 x 3/4 51 4.1 8 103 231
1/2 x 1 39 3.1 6.1 77 173
1/2 x 1.5 25 2 3.9 52 115
1/2 x 2 19 1.5 3 38 86
1/2 x 3 12 1 1.9 26 58

Volume Equivalents:

25 Tubes = one 2 Gallon Pail

56 Tubes = one 4.5 Gallon Pail

6 20-oz Sausages = 1 Gallon, Less 8-oz