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Tremco Spectrem 2 Light Bronze 20oz Sausage
Tremco Spectrem 2 is a single-component, neutral-cure, medium-modulus silicone sealant for perimeter caulking and glazing, supplied in a Light Bronze 20 oz (600 mL) sausage. It has ±50% movement capability (ASTM C719), is tack-free in 20 to 40 minutes and carries Greenguard Gold certification.
- Meets ASTM C920 Type S, Grade NS, Class 50, Use NT, M, G, A and O, and ASTM C1184
- For aluminum, glass, steel, painted metal, plastic, stone, concrete and brick
- No mixing; goes on with conventional caulking equipment
$12.01
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Tremco Spectrem 2 Light Bronze 20oz Sausage
Tremco Spectrem 2 is a high-performance, single-component, neutral-cure, medium-modulus silicone sealant intended for perimeter caulking and glazing applications. It may be used on aluminum, glass, steel, painted metal, plastic, stone, concrete and brick, so one product covers perimeter caulking, glazing and joint filling on the same job. Movement capability is ±50% (ASTM C719), and it resists driving rain, ozone, ultra-violet light and temperature extremes. Tremco has tested it for compatibility and approved it for use with its silicone compatible rubber extrusions and the SGT-900 and SGT-2000 series of tapes. It goes on with conventional caulking equipment with no mixing. Tremco recommends only Black Spectrem 2 for structural glazing applications. Do not apply it to damp or contaminated surfaces; it is not intended for continuous water immersion and should be used with adequate ventilation.
Key Features
- Medium modulus with ±50% cyclic movement (ASTM C719)
- Tack-free in 20 to 40 min (ASTM C679); skin forms in 10 to 15 min
- Neutral cure; single component, no mixing
- Resists driving rain, ozone, ultra-violet light and temperature extremes
- Greenguard Gold certified
Applications
- Perimeter caulking
- Glazing and weather sealing (structural glazing: Black only)
- Joint filling in aluminum, glass, steel and painted metal
- Joints in stone, concrete, brick and plastic
Technical Specifications
| Property | Value |
|---|---|
| Type | Single-component, neutral-cure, medium-modulus silicone sealant |
| Color | Light Bronze |
| Standards | ASTM C920 Type S, Grade NS, Class 50, Use NT, M, G, A and O; ASTM C1248; ASTM C1184 (conforms to Use G and O, aluminum); U.S. Federal Specification TT-S-001543A (COM-NBS) Class A; U.S. Federal Specification TT-S-00230C (COM-NBS) Class A, Type II; CAN/CGSB 19.13-M87 |
| Structural glazing | Only Black Spectrem 2 is recommended; the AAMA 802.3-92, 805.2-94 and 808.3-92 listings apply to Black |
| Compatibility | Tested and approved with Tremco silicone compatible rubber extrusions and SGT-900 and SGT-2000 series tapes |
| Certification | Greenguard Gold |
| Cyclic movement (ASTM C719) | ±50% |
| Hardness, Shore A (ASTM C661) | 37 to 40 |
| Tack-free time (ASTM C679) | 20 to 40 min |
| Tooling time / skin formation | 10 to 15 min |
| Flow, sag or slump (ASTM C639) | Nil |
| Sag (ASTM D2202) | 0 to 0.03 in |
| Elongation (ASTM D412) | 235 to 260% |
| Peel strength, aluminum and glass (ASTM C794) | 16 to 22 pli |
| 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) | 220 to 230 psi (1.52 to 1.59 MPa) |
| Ultimate elongation, 21 days (ASTM C1135) | 261% |
| Ultimate tensile strength, 21 days (ASTM C1135) | 123 psi (0.85 MPa) |
| Staining of porous substrates, white marble (ASTM C1248) | No stain, primed and unprimed |
| Cured properties | After 14 days at 77°F (25°C), 50% RH unless noted (21 days for ultimate values) |
| Pack | 20 oz (600 mL) sausage |
| Part number | 947809 385 |
Product documents: Tremco Spectrem 2 Data Sheet (PDF)
Frequently Asked Questions
How much movement does Spectrem 2 handle?
Cyclic movement is ±50% under ASTM C719, and it meets ASTM C920 Type S, Grade NS, Class 50, Use NT, M, G, A and O. Elongation is 235 to 260% (ASTM D412).
Can this color be used for structural glazing?
No. Tremco recommends only Black Spectrem 2 for structural glazing applications, and the AAMA 802.3-92, 805.2-94 and 808.3-92 listings apply to Black only. The Light Bronze version is for perimeter caulking, glazing and joint filling.
How fast does Spectrem 2 cure?
A skin forms in 10 to 15 minutes (tooling time) and it is tack-free in 20 to 40 minutes (ASTM C679). Tremco reports cured properties after 14 days at 77°F (25°C) and 50% RH, and ultimate values after 21 days.
What substrates and accessories is it used with?
It may be used on aluminum, glass, steel, painted metal, plastic, stone, concrete and brick. Tremco has tested it for compatibility and approved it for use with its silicone compatible rubber extrusions and the SGT-900 and SGT-2000 series of tapes.
Is Spectrem 2 suitable for sensitive indoor environments?
It carries Greenguard Gold certification, which Tremco cites for sensitive indoor environments including hospitals and schools.
Where should Spectrem 2 not be used?
Do not apply it to damp or contaminated surfaces. It is not intended for continuous water immersion and should be used with adequate ventilation. This listing is the Light Bronze 20 oz (600 mL) sausage; the other colors are listed separately.
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