AFTC 5046
AFTC 5046 is a 0.025″ thick, double-sided closed cell acrylic foam tape in the SilverTape family, designed for bonding a wide variety of materials with high and medium surface energy. It delivers 90° peel adhesion of 17 lb/in, dynamic shear strength of 84 lb/in², and tensile strength of 46 lb/in², and operates across a temperature range of -40°F to 248°F long-term and 374°F short-term. The tape is formulated to absorb differential thermal expansion between dissimilar bonded materials and, on high surface energy substrates, provides the strongest bond the SilverTape family is able to produce.
Key Properties
- 90° Peel Adhesion: 17 lb/in (ASTM D3330)
- Dynamic Shear Strength: 84 lb/in² (ASTM D1002)
- Tensile Strength: 46 lb/in² (ASTM D897)
- Temperature Resistance: -40°F min / 248°F long-term / 374°F short-term
- Carrier / Liner: Uncoated acrylic foam core / Red PE liner
- Total Tape Thickness: 0.025″ ±15%
We want to help!
Enter your information and we'll get you in touch with our knowledgable staff. We know how important to the right product for your project.
Request a Consultation
- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.025″ ±15% | — |
| Color | Gray | — |
| Material / Substrate | Uncoated Acrylic Foam | — |
| Core | Acrylic Adhesive Foam Core | — |
| Adhesive Type | Closed Cell Acrylic | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Double Sided Adhesive | — |
| Liner | Red PE liner | — |
| Density | 54 lb/ft³ | — |
| Cell Structure | Closed Cell | — |
Adhesion Properties
| Property | Value | Test Method |
| 90° Peel Adhesion | 17 lb/in | ASTM D3330 |
| Dynamic Shear Strength | 84 lb/in² | ASTM D1002 |
| Tensile Strength | 46 lb/in² | ASTM D897 |
| Static Shear Strength @ 72°F | 1,000 grams* | ASTM 3654 |
| Static Shear Strength @ 150°F | 500 grams* | ASTM 3654 |
| Static Shear Strength @ 200°F | 500 grams* | ASTM 3654 |
*Weight that 1/2 square inch will hold 10,000 minutes (7 days).
Thermal Properties
| Property | Value | Test Method |
| Minimum Temperature Resistance | -40°F | — |
| Short-Term Temperature Resistance | 374°F | — |
| Long-Term Temperature Resistance | 248°F | — |
| Recommended Application Temperature | Minimum 59°F | — |
Environmental Performance
| Property | Value | Test Method |
| UV Resistance | Excellent | — |
| Solvent Resistance | Excellent | — |
Shelf Life / Storage
| Property | Value | Test Method |
| Shelf Life | 18 months | — |
| Recommended Storage Conditions | Store in its original package and in a dry place between 39.2°F and 100.4°F | — |
- Structural bonding of glass and glass/epoxy panels to metal frames on high surface energy substrates at a thin bondline
- Bonding of coated and anodized aluminum components requiring absorption of differential thermal expansion
- Attachment of stainless steel and galvanized steel parts on assemblies requiring a permanent structural bond
- Medium surface energy substrate bonding in combination with H-O Products Primer 33 or Primer 101
- High-temperature-resistance bonding applications requiring a 0.025″ bondline with full long-term performance to 248°F
Common industries: Industrial assembly, architectural glazing, automotive manufacturing, metal fabrication.
AFTC 5046 is a 0.025″ thick grade in the SilverTape family of high-performance double-sided acrylic foam tapes, formulated to bond a wide variety of materials with high and medium surface energy — including glass, glass/epoxy, stainless steel, galvanized steel, anodized steel, and coated aluminum. The acrylic adhesive foam core is closed cell and carries a permanent adhesive system on both faces, protected by a red PE liner.
The tape’s very high temperature resistance is a noted characteristic, with a long-term rating of 248°F and short-term rating of 374°F.
The tape exhibits excellent UV resistance and excellent solvent resistance per the TDS. In combination with a primer, the SilverTape family provides excellent adhesion performance on medium surface energy materials. Static shear strength is 1,000 grams per 1/2 square inch held for 10,000 minutes (7 days) at 72°F, and 500 grams at 150°F and 200°F.
Surface preparation is critical: substrates should be cleaned with IPA for light to moderate contamination, or MEK, Heptane, or Acetone for heavy contamination followed by an IPA wipe. Raw aluminum must be abraded prior to bonding. A minimum bond-line pressure of 14.5 psi must be applied. Full end-strength is reached within 72 hours; use of H-O Products Primer 33 or Primer 101 reduces this to approximately 20 minutes.
Minimum recommended application temperature is 59°F.
What differentiates AFTC 5046 from AFTC 5008, the 0.03" SilverTape grade?
AFTC 5046 is 0.025" thick with a thickness tolerance of ±15%, providing a thinner and slightly more flexible bondline than AFTC 5008 at 0.03" (±15%). AFTC 5046 delivers 17 lb/in peel adhesion and 84 lb/in² dynamic shear, compared to 18 lb/in and 94 lb/in² for 5008. AFTC 5046 is the preferred choice where a lower bondline profile is needed while maintaining the full SilverTape temperature resistance range.
Why is peel adhesion important when selecting a structural bonding tape?
Peel adhesion determines whether the tape maintains contact with the substrate when the assembly is subjected to flexing, vibration, or forces that act to lift the bond line at its edges. In bonded assemblies using glass, metal, or coated substrates, inadequate peel adhesion leads to edge delamination and bond failure. AFTC 5046 delivers 17 lb/in at 90° peel, providing reliable edge retention on the high and medium surface energy substrates for which it is formulated.
What is the operating temperature range for AFTC 5046?
AFTC 5046 has a minimum temperature resistance of -40°F, a long-term temperature resistance of 248°F, and a short-term temperature resistance of 374°F, as listed on the TDS.
Is AFTC 5046 suitable for high-temperature manufacturing environments?
Yes. AFTC 5046 is rated to 374°F short-term and 248°F long-term, consistent with the full SilverTape temperature resistance range. No specific regulatory compliance standards are stated on the TDS.
How should AFTC 5046 be specified?
Specify grade (AFTC 5046), thickness (0.025"), color (gray), compliance requirements, dimensional tolerances, adhesive side (double), liner type (red PE liner), and finished format.
