







The photovoltaic sealing strip is an essential component meticulously tailored for the installation and sealing of solar photovoltaic panels. Its primary purpose is to guarantee that the connections between photovoltaic panels exhibit superior waterproofing, dustproofing, weather resistance, and anti-aging properties, thereby ensuring the sustainable and stable operation of the photovoltaic system over time. Below is a comprehensive overview of photovoltaic sealing strips:
1. Material and Characteristics
1. Main material: Photovoltaic sealing strips are typically crafted from either ethylene propylene diene monomer (EPDM) or silicone.
Ethylene Propylene Diene Monomer (EPDM): Characterized by outstanding heat resistance, weather resilience, ozone resistance, robust tensile strength, excellent elasticity, and significant temperature tolerance (-40 ºC to 120 ºC). It also offers strong anti-aging capabilities and exceptional physical and mechanical attributes.
Silicone: Known for its excellent resistance to high temperatures (150-200 ºC) and low temperatures (-40-60 ºC), silicone also provides superior aging resistance, chemical corrosion protection, and remarkable electrical insulation properties.
2. Characteristics:
Waterproof and dustproof: Effectively prevents the ingress of rainwater and dust into the photovoltaic panel's interior, thereby shielding the panel from potential damage.
Weather resistant and aging resistant: Exhibits robustness against natural elements such as ultraviolet rays and ozone, maintaining its integrity without cracking or deforming even after prolonged use.
High elasticity: Boasts excellent resilience and resistance to compression deformation, accommodating the expansion and contraction of photovoltaic panels due to varying temperatures.
Easy to install: Thoughtfully designed for simplicity, the installation process is straightforward, enhancing construction efficiency.
2. Type and shape
1. Type: Based on material and performance, photovoltaic sealing strips are categorized into EPDM rubber sealing strips and silicone sealing strips.
2. Shape: Photovoltaic sealing strips are available in a variety of shapes, including T, D, P, O, etc., to accommodate diverse sealing requirements for different photovoltaic panel connections.
3. Application and Function
1. Application: Widely employed in the installation and sealing of solar photovoltaic panels, these strips are used in photovoltaic module frames, gaps between photovoltaic panels, and junctions between junction boxes and photovoltaic panels.
2. Function:
Sealed and waterproof: Prevents rainwater infiltration into the photovoltaic panel's interior, safeguarding the circuit and components from moisture and corrosion.
• Buffer and shock absorption: Provides cushioning during external impacts, protecting the photovoltaic panel from potential damage.
• Improve energy efficiency: By ensuring excellent sealing, it helps minimize dust accumulation on photovoltaic panel surfaces, thus enhancing photovoltaic conversion efficiency.
4. Selection and installation precautions
1. Selection: When selecting photovoltaic sealing strips, it's critical to consider factors such as the material, size, and installation environment of the photovoltaic panel to choose the optimal material, shape, and size for the sealing strip.
2. Installation:
Clean the surface: Prior to installation, ensure that the photovoltaic panel connection surface is clean, dry, and devoid of oil stains or impurities.
• Correct installation: Follow the sealing strip's installation guide meticulously to ensure accurate placement without any omissions or misalignments.