AFTC 8403
AFTC 8403 is a double sided, closed cell acrylic foam tape with a permanent Acrylic Coating 40 adhesive system on both faces, available at 0.09″ thickness. It is designed for bonding high and medium surface energy substrates — including plastics, glass, steel, aluminum, and ceramics — with excellent UV, aging, solvent, and high-temperature resistance rated from +100°C to +160°C. The tape delivers a 90° peel adhesion of 17 lb/in and an exceptional dynamic and tensile shear strength of 105 lb/in², with a long-term temperature resistance of 248°F and short-term resistance of 374°F.
Key Properties
- 90° Peel Adhesion: 17 lb/in (ASTM D3330)
- Dynamic Shear Strength: 105 lb/in² (ASTM D1002)
- Tensile Strength: 105 lb/in² (ASTM D897)
- Long-Term Temperature Resistance: 248°F
- Liner / Carrier: Red PE liner; Acrylic Adhesive Foam Core
- Total Tape Thickness: 0.09″ ±15%
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.09″ ±15% | — |
| Color | White | — |
| Material / Substrate | Coated Acrylic Foam | — |
| Core | Acrylic Adhesive Foam Core | — |
| Adhesive Type | Acrylic Coating 40 | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Double Sided Adhesive | — |
| Liner | Red PE liner | — |
| Density | 52 lb/ft³ | — |
| Cell Structure | Closed Cell | — |
Adhesion Properties
| Property | Value | Test Method |
| 90° Peel Adhesion | 17 lb/in | ASTM D3330 |
| Dynamic Shear Strength | 105 lb/in² | ASTM D1002 |
| Tensile Strength | 105 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 |
| Solvent Resistance | Excellent | — |
| UV 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 | — |
- Bonding of lightweight, thin, and small high and medium surface energy plastic molded components in consumer electronics and electronic assembly applications
- Adhesive mounting of glass or ceramic components in assemblies subject to elevated operating temperatures up to 248°F long-term
- Structural bonding of aluminum or steel components where high dynamic shear strength (105 lb/in²) and elevated temperature resistance are required
- Low-profile adhesive attachment of lightweight parts where a virtually invisible white bond line is preferred
- Bonding of molded plastic parts on high and medium energy surfaces in applications requiring aging and UV resistance alongside high-temperature performance
Common industries: electronics, consumer products, automotive, general manufacturing, signage and display.
AFTC 8403 is a high-temperature double sided acrylic foam tape from the 84 series, constructed with an acrylic adhesive foam core coated on both sides with Acrylic Coating 40.
The 84 series is characterized by its exceptionally high temperature resistance — with a long-term rating of 248°F and short-term rating of 374°F, significantly exceeding the 212°F/320°F ratings of standard AFTC grades — and its high dynamic and tensile shear strength of 105 lb/in².
The TDS describes this series as producing tapes that are in many situations virtually invisible, allowing the use of lightweight, thin, and small materials in many shapes and sizes with good adhesive performance on a variety of molded parts. AFTC 8403 is the White option in the 84 series, and uses Acrylic Coating 40 to deliver an excellent bond to high and medium surface energy substrates with high initial tack.
The tape demonstrates excellent resistance to solvents and UV exposure. As a pressure sensitive adhesive, a minimum bond line pressure of 14.5 psi applied by hand roller or mechanical presser is required for full adhesion. For low surface energy substrates, primer use is recommended; the AFTC line requires up to 72 hours to reach end-strength without primer, which is reduced to approximately 20 minutes with a compatible primer. Shelf life is 18 months when stored in original packaging in a dry environment between 39.2°F and 100.4°F.
What differentiates AFTC 8403 from standard AFTC grades such as AFTC 5393, which shares the same thickness?
AFTC 8403 belongs to the 84 series, which is distinguished by its significantly higher temperature ratings — 248°F long-term and 374°F short-term — versus 212°F and 320°F for standard AFTC grades. It also delivers much higher dynamic and tensile shear strength at 105 lb/in² versus 72 lb/in² for AFTC 5393. In exchange, peel adhesion is lower at 17 lb/in. The 84 series is specifically described as designed for lightweight, thin, and small molded parts and electronic assembly applications.
Why is peel adhesion important when selecting an acrylic foam tape?
Peel adhesion — measured here at 17 lb/in per ASTM D3330 — determines how effectively the tape resists being peeled or lifted from a bonded substrate under service loading. For the 84-series applications involving thin, lightweight molded parts and electronic assemblies, the tape's exceptionally high dynamic shear strength (105 lb/in²) is typically the dominant performance characteristic; peel behavior must still be considered in any design where lifting or peeling forces may act on the bond line.
What is the operating temperature range for AFTC 8403?
AFTC 8403 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. The TDS describes its high-temperature resistance range as +100°C to +160°C (212°F to 320°F).
Is AFTC 8403 suitable for outdoor or UV-exposed environments?
The TDS rates AFTC 8403 as having excellent UV resistance and excellent solvent resistance, and lists excellent UV, aging, solvent, and high-temperature resistance as a product feature. No specific regulatory compliance standards are listed on the TDS.
How should AFTC 8403 be specified?
Specify grade (AFTC 8403), thickness (0.09"), color (White), liner type (Red PE), dimensional tolerances, and finished format. Confirm substrate type and surface energy level, and confirm minimum application temperature of 59°F can be met at time of bonding.
