Anello O in silicone incapsulato FEP

About FEP Encapsulated Silicone O Ring

FEP-type PTFE fluoropolymers (high-performance plastics) have excellent chemical and temperature resistance, but lack the elasticity of elastomers (rubber) needed to maintain a good seal. FEP Encapsulated Silicone O Ring combines the best sealing properties of encapsulated, elastomers with improved chemical and temperature performance compared to most solid elastomers. Maximize sealing by using just the right amount of compression force to maintain the seal without compressing, which can shorten seal life.

Caratteristiche

• Outstanding chemical and corrosion resistance.
• Low coefficient of friction.
• Resilience with choice of elastomeric cores.
• Low compression set.
• Temperature range: -75°F to 400°F (-60°C to 205°C).
• Unlimited sizes (No tooling charges).
• Solid & hollow silicone, Viton® cores.
• FDA-compliant materials are available.
• USP Class VI approved materials available.

Principio di tenuta

The sealing principle of FEP Encapsulated Silicone O Ring is based on the elastic deformation of the O-ring and the chemical inertness and low friction characteristics of the FEP coating.

When an O-ring is installed in a channel or gap in a sealing application, its initial shape is a circular ring. Because silicone rubber has good elasticity, when the annular O-ring is compressed or stretched, it will elastically deform, fill and closely fit the surface of the channel or gap.

The purpose of the FEP cladding is to provide additional protection and enhanced sealing. First, FEP materials have excellent chemical inertness and can resist corrosion from a variety of chemical substances. Therefore, when the O-ring comes into contact with corrosive media, the FEP coating can prevent the silicone rubber from being corroded or damaged.

Secondly, FEP material has a low friction coefficient, so in sealing applications, the FEP coating can reduce friction loss, allowing the O-ring to slide and deform more easily, maintaining the sealing effect.

Scenari di applicazione

FEP (fluoroethylene propylene) encapsulated silicone rubber O-rings are widely used in many applications, mainly due to their excellent chemical inertness and high temperature resistance. Here are some possible application scenarios:

1. Chemical industry: FEP encapsulated silicone rubber O-rings are often used for sealing applications in the chemical industry, especially in environments involving corrosive media, high-temperature media, or volatile chemical substances. They can withstand various acids, alkalis, solvents and oxidants, ensuring sealing performance and durability.

2. Food and pharmaceutical industry: FEP encapsulated silicone rubber O-ring meets food-grade and medical-grade requirements, so it is widely used in the food and pharmaceutical industry. They can be used to seal liquids, gases and powders, ensuring product purity and safety.

3. Semiconductor and electronics industry: FEP encapsulated silicone rubber O-rings are used in the semiconductor and electronics industries to seal key components, such as vacuum systems, chemical processing equipment, and gas transmission pipelines. They provide a reliable seal, prevent external contaminants from entering the system, and maintain stability in high temperatures and chemically aggressive environments.

4. Medical equipment: Due to its biocompatibility and chemical inertness, FEP encapsulated silicone rubber O-rings are widely used in medical equipment. They can be used to seal medical devices, drug delivery systems, syringes and other medical equipment.

5. Oil and gas industry: FEP encapsulated silicone rubber O-rings are used in the oil and gas industry to seal valves, pipes and connections. They can withstand high temperatures and chemicals, ensuring system reliability and safety.

Processo di produzione

FEP (fluoroethylene propylene) encapsulated silicone rubber O-ring is a seal with excellent chemical stability and high temperature resistance. The following is the general production process of FEP encapsulated silicone rubber O-rings:

1. Raw material preparation: Prepare silicone rubber and FEP materials. Silicone rubber is the basic material of O-rings, and FEP material is used to encapsulate silicone rubber to enhance its chemical stability and high temperature resistance.

2. Rubber pretreatment: Pretreat silicone rubber materials, including mixing, preparing molding materials, etc. This step is designed to achieve the desired rubber properties and shape.

3. Manufacturing O-rings: Use rubber pretreatment materials to perform injection molding or calendering in the mold to create the initial shape of the silicone rubber O-ring. This step can be processed and trimmed multiple times according to specific requirements to obtain the desired size and shape.

4. FEP packaging: Place the manufactured silicone rubber O-ring in a special device, and then package the FEP material around the silicone rubber ring. This usually involves heating the FEP material to a molten state so that it coats the surface of the silicone rubber and forms a uniform encapsulation layer.

5. Curing and cooling: After the packaging is completed, solidify and cool the FEP encapsulated silicone rubber O-ring. This step is intended to allow the FEP material to cure and form a strong bond with the silicone rubber.

6. Inspection and quality control: Inspection and quality control of FEP encapsulated silicone rubber O-rings. This includes checking aspects such as size, appearance and performance to ensure the product meets specifications.

7. Packaging and storage: Pack the FEP encapsulated silicone rubber O-rings that meet quality standards and store them properly to ensure the safety and integrity of the product during transportation and use.

It should be noted that the specific production process may vary depending on the manufacturer and product requirements. The above is a general process flow, for reference only. In actual production, adjustments and optimization should be made according to specific conditions.

Physical property information