邯鄲釘釘貿易有限公司 (喜力德) 

Roofing Washers for Drilling Screws and Tapping Screws
Steel/EPDM Washers
Material:

Steel: High-quality galvanized or stainless steel provides exceptional strength and corrosion resistance.
EPDM (Ethylene Propylene Diene Monomer): A synthetic rubber known for its durability, flexibility, and resistance to UV radiation, ozone, and weathering.
Function:

Designed to create a watertight seal around the screw, preventing water ingress and corrosion.
The steel component offers structural support, while the EPDM provides a tight seal and vibration dampening.
Application Scenarios:

Ideal for metal roofing and siding installations where long-lasting, weather-resistant fastening is crucial.
Commonly used in environments exposed to harsh weather conditions, such as coastal areas or industrial settings.
Advantages:

Durability: Combines the strength of steel with the flexibility and resilience of EPDM.
Weather Resistance: Excellent performance in extreme temperatures and UV exposure.
Corrosion Protection: Prevents water penetration, reducing the risk of rust and extending the lifespan of the installation.
PVC Washers
Material:

PVC (Polyvinyl Chloride): A versatile plastic known for its chemical resistance, low cost, and ease of manufacturing.
Function:

Provides a cushion between the screw and the roofing material, helping to distribute load and prevent material damage.
Acts as a barrier against moisture penetration, albeit with lower durability compared to EPDM.
Application Scenarios:

Suitable for applications where cost-efficiency is prioritized over long-term durability.
Used in non-critical roofing applications or temporary structures.
Advantages:

Cost-Effective: Lower cost compared to steel/EPDM washers.
Chemical Resistance: Resistant to various chemicals, making it suitable for specific environments.
Ease of Use: Lightweight and easy to install.
EPDM Washers
Material:

EPDM (Ethylene Propylene Diene Monomer): A durable synthetic rubber with excellent weatherability and flexibility.
Function:

Creates a reliable seal around the screw to prevent water ingress.
Absorbs vibrations and accommodates thermal expansion and contraction of roofing materials.
Application Scenarios:

Frequently used in roofing applications requiring superior weather resistance, such as solar panel installations or green roofs.
Suitable for both residential and commercial buildings where long-term performance is essential.
Advantages:

Weather Resistance: Exceptional resistance to UV radiation, ozone, and extreme temperatures.
Flexibility: Maintains sealing properties despite movements in the roofing material.
Longevity: Offers a longer service life compared to PVC washers, ensuring fewer maintenance requirements.