Product Description of H.B. Fuller Tonsan® 1591H
H.B. Fuller Tonsan® 1591H is a silicone-based sealant designed for flange sealing in engine components. It offers instant sealing with medium viscosity, high strength, and high elongation. The sealant exhibits excellent resistance to heat aging and oil exposure, making it reliable for demanding automotive applications.
Features of H.B. Fuller Tonsan® 1591H
- Easy to apply
- Excellent chemical resistance
- High temperature resistance
- Reliable sealing performance
- High efficiency
- High elongation (480% at room temperature)
- Fast tack-free time (5-15 minutes)
- Wide operating temperature range (-54°C to 210°C)
Applications of H.B. Fuller Tonsan® 1591H
- Flange sealing of engine parts
- Suitable for both mechanical and manual application methods
- Ideal for use in automotive powertrain and under-the-hood components
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
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| Property | Value | Units |
| Specific Gravity | 1.36 | g/cm³ |
| Tensile Strength (Room Temperature) | 2.8 | MPa |
| Elongation at Break (Room Temperature) | 480 | % |
| Tensile Strength (After Aging 168h at 175°C) | 2.9 | MPa |
| Elongation at Break (After Aging 168h at 175°C) | 350 | % |
| Tensile Strength (After Soaking in 30# Engine Oil 100h at 125°C) | 2.4 | MPa |
| Elongation at Break (After Soaking in 30# Engine Oil 100h at 125°C) | 500 | % |
| Tack-Free Time | 5-15 | Minutes |
| Curing Depth (24h) | <2 | mm |
| Temperature Range | -54 to 210 | °C |
