Automotive High-Temperature Fiberglass Aluminum Foil Tape for Wire Harness Heat Shielding

Composite Structure and Adhesive Set the Thermal Performance

A 260°C instantaneous rating does not mean the complete tape can operate continuously at 260°C. Thermal performance depends on the foil/fiberglass composite, adhesive, dwell time at temperature, substrate, and the failure criterion used in the test.

SXGAL-90G uses silicone adhesive for its high-temperature application. Rather than assigning a universal temperature ceiling to every acrylic, rubber, or silicone adhesive, buyers should compare the approved grade datasheet with the OEM's actual aging method. This prevents a momentary heat-resistance number from being mistaken for a continuous-service limit.

If the program also requires flame performance, electrical insulation, or EMI shielding, list those as separate qualification items. Aluminum foil may contribute to heat reflection, but a foil surface alone does not prove UL, EMC, or electrical-insulation performance.

High-Temperature Fiberglass Aluminum Foil Tape for Heat ShieldingFor projects requiring a reinforced reflective barrier, specify the tape structure, adhesive, instantaneous or aging temperature requirement, and the actual harness zone. Any flame, EMI, or electrical-insulation requirement should be supported by the relevant grade-specific test report.View Product →

The values used in qualification should come from the current grade datasheet and agreed test method. Industry reference ranges are useful for screening, but they should not replace product-specific data or an OEM validation test.

Spec-Sheet Parameters That Matter in Qualification

For SXGAL-90G and similar heat-shielding tapes, the most useful parameters are construction and total thickness, peel adhesion, instantaneous versus aged heat resistance, width and roll format, and any project-specific environmental test requirements.

Shixin's current SXGAL-90G product information lists a 170 μm construction, 4 N/cm peel adhesion, and up to 260°C instantaneous heat resistance. Because temperature data can be reported under different test durations and methods, the approved datasheet should state the exact aging condition used for qualification.

These parameters interact. A thicker reinforced composite can improve handling and tear resistance but may reduce conformability around small radii. Adhesion should be checked on the actual cable jacket, metal shield, or other contact surface. For automatic use, clean slitting, unwind behavior, roll dimensions, and splice control become production parameters as well as material parameters.

Buyer's Checklist for Automotive Fiberglass Aluminum Foil Tape

Before placing a volume order, verify the exact grade, obtain the current datasheet and relevant reports, test the tape on the real harness zone, and confirm roll format or converted-part requirements for the production process.

• Verify documentation by scope: ISO 9001 and ISO 14001 relate to the manufacturer's management system; RoHS, REACH, and SGS reports should be checked against the actual material or grade required by the program.
• Run heat-aging according to the OEM or customer's specified temperature, duration, and failure criteria. After aging, inspect lifting, adhesive bleed, brittleness, delamination, and loss of coverage. Do not assume a fixed 500-hour test unless the program requires it.
• Test adhesion on the actual contact material. Cable jackets, coated metals, plastics, and insulation facings can have very different surface energies, so steel-only peel data may not predict the final assembly.
• Confirm finished width, roll length, unwind direction, core and packaging requirements, and splice limits where they affect the production line. If the material will be die-cut, include the part geometry and liner or handling requirements.
• Ask for customized width and roll format only after the application route is defined. Shixin can convert tapes to customer-specified sizes and provide samples for line or assembly validation.

For volume programs, also confirm MOQ, lead time, batch consistency, and pre-shipment sample requirements. Keep this page focused on high-temperature heat shielding, while a separate general wire-harness tape guide can cover routine bundling and wrapping materials.

For die-cut shields or protective pads that require exposed-adhesive handling control, a linered high-temperature aluminum foil tape may be useful. The adhesive chemistry and temperature performance should be confirmed for that separate grade rather than borrowed from SXGAL-90G.

Frequently Asked Questions

What temperature can SXGAL-90G automotive fiberglass aluminum foil tape withstand?

Shixin's current product information lists up to 260°C instantaneous heat resistance. Instantaneous and continuous ratings are not the same. Use the approved datasheet and the OEM or customer aging condition to determine the qualified service window.

Is fiberglass aluminum foil tape the same as a general wire-harness wrapping tape?

No. General wrapping tape is mainly used for bundling, abrasion control, and handling. Fiberglass aluminum foil tape adds a heat-reflective, reinforced composite and is better treated as a heat-shielding or protective material for heat-adjacent zones.

Can it be used on automatic wrapping machines?

Possibly, but machine fit depends on width tolerance, unwind behavior, roll format, splice limits, and the stiffness of the composite. A production-format sample should be tested on the actual equipment before approval.

How can I verify a supplier's temperature claim before ordering?

Ask for the exact grade datasheet, test method, duration, and failure criterion behind the temperature value. Then reproduce the OEM or customer aging condition on the real harness or shield assembly and inspect adhesion, delamination, and coverage after aging.