High-Temperature Silicone Sealant
- For sealing and gasketing applications on engine blocks, valve covers, exhaust manifolds, and other high-temperature automotive components – withstanding engine heat and vibration.
- For sealing observation windows on industrial furnaces, ovens, and drying equipment – maintaining sealing integrity under continuous high-temperature conditions
- For securing and sealing heating elements in household appliances – ensuring long-term safety and reliable performance.
- For sealing and repair of pipes, flanges, and joints in industrial equipment – one sealant, multiple uses, reducing spare parts inventory.
Guhe High-Temperature Silicone Sealant (gh-880) is a one-component, neutral-cure, industrial-grade silicone sealant specifically engineered for applications requiring reliable sealing and bonding in high-temperature environments. It is formulated to withstand continuous service temperatures from -60°C to +300°C, making it an ideal solution for automotive, appliance, electronic, and general industrial sealing applications where thermal stability and long-term durability are critical.
This sealant provides excellent adhesion to metals, ceramics, glass, and most engineered plastics. Its neutral-cure system ensures low odor and non-corrosive performance, making it safe for use on sensitive substrates. At room temperature, it cures to form a tough, flexible rubber that maintains its elasticity and sealing integrity under thermal cycling, vibration, and mechanical stress.
With superior resistance to oils, fuels, and common industrial chemicals, gh-880 delivers dependable performance in demanding environments where conventional sealants fail. It is the preferred choice for maintenance professionals, OEM manufacturers, and industrial engineers seeking a reliable high-temperature sealing solution.
Available in 300ml cartridges, 590ml sausage packs, and bulk drums – with COA documentation for every shipment.
| Cure Type | 固化类型 | Neutral / 中性固化 | — |
| Continuous Service Temperature | 连续工作温度 | -60°C to +250°C | — |
| Peak Temperature | 峰值耐温 | Up to +260°C / 最高可达+260°C | — |
| Hardness (Shore A) | 硬度（邵氏A） | 40-50 | GB/T 13477 |
| Tensile Strength | 拉伸强度 | ≥ 1.5MPa | GB/T 528 |
| Elongation at Break | 断裂伸长率 | ≥ 250% | GB/T 528 |
| Tack-Free Time | 表干时间 | ≤ 1 hour | GB/T 13477 |
| Service Temperature Range | 工作温度范围 | -60°C to +250°C | — |
| Shelf Life | 保质期 | 12 months | — |
