3M Scotch-Weld EC-3549 Yellow Adhesive – 4 fl oz Kit for Aerospace Interior Bonding
3M Scotch-Weld EC-3549 is a yellow specialty adhesive from the 3M Scotch-Weld EC series, designed for flexible bonding of rubber, plastic, fabric, and metal substrates in aerospace interior assembly and MRO maintenance operations. The EC series designation indicates an aerospace-qualified product developed and tested to meet the demanding performance requirements of commercial and military aviation applications.
The 4 fl oz kit provides a convenient, right-sized quantity for MRO maintenance tasks, spot repairs, and small production bonding operations. The yellow color provides visual confirmation of adhesive coverage during application and facilitates inspection of bond completeness in assembled joints, an important quality assurance benefit in aerospace interior bonding operations.
EC-3549 provides a flexible cured adhesive film suitable for the dynamic service conditions of aircraft interior components — accommodating the vibration, thermal cycling, and mechanical loading experienced by aircraft interior panels, trim, and flexible components throughout the aircraft service life.
| Attribute | Detail |
|---|---|
| Manufacturer Part Number (MPN) | SGP21105 |
| Brand | 3M |
| Product Name | Scotch-Weld EC-3549 |
| Color | Yellow |
| Product Type | Specialty Flexible Adhesive |
| Package Size | 4 fl oz Kit |
| Substrate Compatibility | Rubber, Plastic, Metal, Fabric |
| Application Method | Brush or Roller |
| Industry Use | Aerospace, Automotive, Industrial, MRO |
Technical Information
3M Scotch-Weld EC-3549 is formulated as a solvent-based adhesive system designed for the flexible bonding requirements of aerospace interior components. The EC series adhesives undergo rigorous testing for compatibility with aircraft interior materials, resistance to aviation cleaning agents, and performance under the temperature and humidity conditions experienced by aircraft interiors in service.
The yellow pigmentation is stable and provides consistent visual coverage identification throughout the shelf life of the product. Proper application technique — including correct flash-off time before joining substrates — is essential for achieving maximum bond strength and durability with contact-type aerospace adhesives.
Refer to the 3M Scotch-Weld EC-3549 technical data sheet for specific application procedures, surface preparation requirements, flash-off times, and performance specifications applicable to your bonding application and substrate combination.
Why Choose 3M EC-3549?
- ✅ Aerospace EC Series — Qualified for aircraft interior bonding applications
- ✅ Yellow Color — Coverage visibility for quality inspection
- ✅ Flexible Bond — Suitable for vibrating aircraft interior components
- ✅ 4 fl oz Kit — Practical MRO quantity for maintenance operations
- ✅ 3M Scotch-Weld Quality — Trusted aerospace adhesive brand
Applications
EC-3549 is used for aircraft interior panel bonding, seat component assembly, trim attachment, and rubber and fabric bonding in aerospace interior assembly and MRO maintenance operations.
Frequently Asked Questions
Q: What is 3M Scotch-Weld EC-3549 used for?
A: EC-3549 is an aerospace-qualified specialty adhesive used for flexible bonding of rubber, plastic, fabric, and metal in aircraft interior assembly and MRO maintenance operations.
Q: What is the MPN for 3M EC-3549 4oz kit?
A: MPN is SGP21105.
Q: Is EC-3549 approved for aircraft interior use?
A: 3M Scotch-Weld EC series adhesives are designed and qualified for aircraft interior applications. Verify against your specific aircraft type and applicable maintenance documentation.
Q: What color is EC-3549?
A: EC-3549 is yellow, providing visual contrast for coverage inspection during application and quality control.
Q: What substrates does EC-3549 bond?
A: EC-3549 bonds rubber, plastic, metal, and fabric substrates. Refer to the 3M TDS for specific substrate compatibility and surface preparation guidance.
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