Gylon 3500 Dielectric Flange Kit

The Gylon 3500 Dielectric Flange Kit, under the esteemed Garlock brand, is a high-performance, non-metallic insulation gasket kit. It is engineered with meticulous precision and is tailor-made to withstand the challenges posed by strong acids, solvents, hydrocarbons, and other highly corrosive media. Utilizing a composite material of PTFE (polytetrafluoroethylene) and silica, endowing it with exceptional chemical resistance and thermal stability, it is suitable for high-pressure environments up to Class 300LB. The kit includes an 8-inch F-type gasket, sleeves, and washers, providing comprehensive sealing and insulation protection. This effectively prevents galvanic corrosion and significantly extends the lifespan of equipment. Whether in chemical, petrochemical, or other demanding industrial environments, the Gylon 3500 Dielectric Flange Kit is reliable, ensuring system safety and efficient operation.  

Material Composition of the Gylon 3500 Dielectric Flange Kit  

The core material of the Gylon 3500 Dielectric Flange Kit is a high-performance, non-metallic insulation gasket based on PTFE (polytetrafluoroethylene). Silica is added as a filler to enhance its mechanical properties and durability remarkably. Below is a detailed analysis of its material composition:  

1. Base Material: Polytetrafluoroethylene (PTFE)  

PTFE is a fully fluorinated polymer with the following characteristics:  

Chemical Inertness: PTFE demonstrates remarkable resistance to nearly all chemicals.   This encompasses strong acids such as sulfuric acid and hydrochloric acid, strong bases like sodium hydroxide, and organic solvents, including benzene and acetone. Its chemical resistance performance is outstanding across the entire pH range from 0 to 14.

Low Friction Coefficient: According to the ASTM D1894 test standard, PTFE's friction coefficient can be as low as 0.05 - 0.1. This property gives it excellent self-lubricating performance in sealing applications. 

Thermal Stability: PTFE has a continuous operating working temperature range of -268°C to +260°C (-450°F to +500°F). Even under extreme temperature conditions, it can maintain the stability of its physical and chemical properties. 

Electrical Insulation: As per the ASTM D257 test, the volume resistivity of PTFE is as high as ≥10^18 Ω·cm, making it an excellent electrical insulating material.  

2. Filler: Silica (Silicon Dioxide)  

Silica, an inorganic filler, is incorporated into PTFE. While retaining the chemical inertness and electrical insulation properties of PTFE, it significantly enhances its mechanical properties. The primary roles and relevant data of silica include:  

Enhanced Mechanical Strength:  

Compressive Strength: The Gylon 3500 Dielectric Flange Kit's compressive strength, as tested by ASTM D695, reaches ≥20 MPa. There has been a substantial increase compared with the compressive strength of pure PTFE, which is approximately 10 - 15 MPa. 

Tensile Strength: The tensile strength of this kit, as determined by ASTM D638, is ≥15 MPa. Although it is slightly lower than pure PTFE, which is around 20 - 30 MPa, it is still sufficient to meet the requirements of the vast majority of industrial application scenarios. 

Hardness: With the addition of silica, the Gylon 3500 Dielectric Flange Kit exhibits a Shore D hardness of 60-65 (tested per ASTM D2240), compared to 50-55 for pure PTFE.  

Improved Wear Resistance: Including silica significantly enhances the wear resistance of the Gylon 3500 Dielectric Flange Kit. According to the ASTM D3702 test, its wear rate is reduced by 30% - 50% compared to pure PTFE. 

Dimensional Stability: Silica-filled PTFE demonstrates improved creep and cold flow properties at high temperatures, with a compression set of ≤15% (tested per ASTM D395), ensuring stable sealing performance over long-term use.  

3. Comprehensive Performance Advantages  

By combining PTFE with silica, the Gylon 3500 Dielectric Flange Kit excels in the following areas:  

Chemical Resistance: This kit can perform extraordinarily well in environments filled with strong acids, bases, and organic solvents and is widely applicable to various industrial applications.

Mechanical Properties:  The enhanced compressive strength and excellent wear resistance make it an ideal choice for high-pressure environments and long-term use working conditions.

Electrical Insulation: With a high-volume resistivity of ≥10^18 Ω·cm, it effectively prevents the occurrence of galvanic corrosion, thus significantly extending the service life of the equipment.

Temperature Adaptability: Its operating temperature range of -268°C to +260°C makes it suitable for extreme temperature environments.  

The material composition of the Gylon 3500 Dielectric Flange Kit, through the optimized combination of PTFE and silica, achieves a perfect balance of chemical inertness, mechanical strength, and electrical insulation. Its exceptional performance data (e.g., compressive strength ≥20 MPa, volume resistivity ≥10^18 Ω·cm) fully demonstrates its reliability and durability in demanding industrial environments. Whether in chemical, petrochemical, or other industrial sectors, the Gylon 3500 Dielectric Flange Kit is top - notch choice for ensuring system safety and efficient operation.