Overview
Gray silicone sheet is a synthetic elastomer material composed of silicone polymers reinforced with silica. Its neutral gray color makes it suitable for industrial environments where dirt resistance is valued. The material is produced through vulcanization, creating a durable yet flexible sheet with consistent properties. Unlike colored silicone sheets, gray variants often contain amorphous silica fillers that enhance mechanical strength and thermal stability. This makes them particularly useful for high-temperature applications where other rubbers would degrade. The material is also inherently resistant to UV light and ozone exposure.
Physical and Chemical Properties
Gray silicone sheets exhibit exceptional thermal stability, maintaining flexibility from -60°C to 230°C continuously, with short-term resistance up to 300°C. Their compression set resistance is superior to organic rubbers, ensuring long-term sealing performance. The material typically has a Shore A hardness between 40-80, adjustable through formulation. Chemically, these sheets resist aging, weathering, and many polar solvents. They show good dielectric strength (15-25 kV/mm) and volume resistivity (>10^14 ohm-cm), making them excellent electrical insulators. The gray pigment used is usually heat-stable and non-migrating, preventing staining of adjacent materials.
Main Applications
In industrial settings, gray silicone sheets are widely used for high-temperature gaskets in automotive, aerospace, and food processing equipment. Their FDA-compliant grades serve as sanitary seals in pharmaceutical manufacturing. The material's vibration damping properties make it ideal for machinery mounts. Electronics manufacturers utilize thin gray silicone sheets as thermal interface materials for heat dissipation. In construction, they function as expansion joint fillers and weatherproofing membranes. Medical applications include prosthetic components and sterilization tray liners where autoclave resistance is required.
Safety and Storage
While silicone rubber is generally non-toxic, gray sheets may contain silica fillers that require dust control during machining. Proper ventilation is advised when laser cutting or engraving. The material is not biodegradable but can be recycled through specialized silicone reclaiming processes. Storage life is typically 5+ years when kept away from strong acids/alkalis, metal salts, and organic peroxide contaminants. Rolls should be stored horizontally to prevent permanent deformation. For critical applications, retest material properties if stored beyond manufacturer's recommended period.
B2B Procurement Guide
Industrial buyers should specify: 1) Thickness tolerance (±0.1mm for precision applications), 2) Reinforcement needs (fiberglass or polyester mesh for high-pressure uses), 3) Regulatory certifications (UL, NSF, or MIL-SPEC if applicable). Sample testing should verify temperature resistance and compression set performance under actual service conditions. For large-volume purchases, consider customized formulations that optimize cost versus performance. Lead times vary from stock availability to 4-6 weeks for specialty grades.
Related Manufacturers
- 主营：胶皮垫、减震垫、橡胶板、硅胶板、橡胶垫、保温垫、石棉板、塑胶板、地胶垫、绝缘胶板、聚乙烯板、绝缘衬垫、塑胶地板、橡胶地板、密封垫片、减震胶垫、减震胶板、绝缘胶垫、缓冲胶垫、密封材料、阻燃胶垫、耐磨软胶垫、橡胶绝缘板、条纹绝缘板、密封圈垫片
- 主营：橡胶板、沥青胶泥、石棉布、硅胶板、盘根、玛蹄脂、pp板、pe板、四氟板
- 主营：橡胶板、环氧板、尼龙棒、硅胶板、减震块
- 主营：白色硅胶板、耐高低温硅胶板、硅橡胶板
- 主营：激光打孔、激光加工、布料激光切割加工、硅胶板、特氟龙激光切割加工、激光切割加工、激光冲孔、硅胶激光打孔、铁氟龙激光打孔、铁氟龙激光冲孔、硅胶激光冲孔、布料热切加工、激光裁剪加工、激光加工厂、布料激光打孔、布料激光冲孔、特氟龙激光打孔、激光热切、服装激光打孔、布料激光加工、激光镂空加工、布料激光雕花、布料镭射加工、激光镭射加工、尼龙激光打孔
- 主营：橡胶板、石棉橡胶板、盘根、硅胶板、石棉板、石棉布、石棉绳、陶瓷纤维布、环氧板、密封垫、四氟板、沥青胶泥、玛蹄脂、环氧煤沥青漆、法兰垫片
- 主营：耐高温胶轮、烫金胶辊、滚轴裹胶、层压机硅胶板、热压硅胶板、真空硅胶板、发泡硅胶板、大宽度硅胶板、烫金硅胶板、覆硅胶膜、抽真空胶袋、防静电胶辊、热转印硅胶辊、防静电胶皮、过胶辊、耐高温胶板、烫金轮、吹膜胶辊、硅胶片、层压机硅橡胶板、覆膜机硅胶皮
- 主营：硅胶发泡垫、硅胶发泡密封件、硅胶垫、发泡硅胶板、硅胶泡棉、硅胶发泡板卷材、硅胶海绵、耐高温防滑垫
- 主营：耐高温胶带、胶帽、胶塞、硅胶板、真空吸盘、硅胶塞、硅胶套、螺纹塞、高温胶塞、堵孔塞、高温堵头、高温胶套、高温保护套、螺栓保护套、高温螺纹塞、绿色高温胶带、PET高温胶带、铜箔胶带、铝箔胶带、铜箔胶贴、铝箔胶贴、绿硅胶、防烤贴纸、防烤胶带
- 主营：硅胶泡棉、绝缘片、热压膜、发泡硅胶板厂家、密封圈、光学胶、硅胶布、防火布、绝缘膜、硅胶垫、硅橡胶、铝端板、保温棉、隔热垫、双面胶、缓冲板、导热硅胶、气凝胶、风道隔板、MPP、陶瓷硅胶、防护板、车扶手、实心硅胶、PU泡棉、泡棉
- 主营：EVA内衬、EVA垫片、青稞纸垫片、硅胶板、XPE泡棉内衬、EVA泡棉、亚克力双面胶、快巴纸垫片、IXPE内衬、铁氟龙垫片、硅胶垫、EVA泡棉双面胶、PE泡棉、隔音棉、吸音棉、软PVC垫片、硅胶泡棉、毛毡垫片、绒布垫片、CR泡棉垫片
- 主营：橡胶板、尼龙棒、橡胶垫、硅胶板、沥青玛蹄脂、四氟乙烯棒、玻璃纤维绳、沥青胶泥
- 主营：橡胶板、石棉布、盘根、硅胶板、陶瓷纤维布、环氧板、绝缘板、各种保温材料、pp板、沥青胶泥、玛蹄脂、尼龙棒、四氟板、pvc板
- 主营：牛棚垫、橡胶板、氟胶板、硅胶板、牛床垫、橡胶垫、防滑胶板、耐酸碱胶板
- 主营：硅胶泡棉、聚氨酯泡棉、导热硅胶片、发泡硅胶板厂家、陶瓷化硅胶泡棉、陶瓷化硅胶布、实心硅胶、陶瓷化硅胶复合带、陶瓷胶玻纤带、pu泡棉