Silicone Orings

Silicone Orings

Silicone orings work well in high-temperature static applications. They have outstanding flex and fatigue life, good ozone and UV radiation resistance, and insulating properties. They can also be compounded to meet specific standards for medical and semiconductor applications.

Silicone has low tensile strength, so it is not suitable for dynamic seals. However, Marco can help you find a solution with alternative silicone compounds or other materials.


Fluorosilicone, abbreviated FVMQ, is a variation of silicone rubber that contains added compounds to enhance the material’s resistance Silicone Parts Manufacturer properties. These specialized variations provide the benefits of silicon with additional resistances to non-polar solvents, fuels, oils, and alkaline chemicals. These specialized properties make them ideal for the production of O-rings, gaskets, and tubing in a wide variety of industrial, automotive, and aerospace applications.

Like silicone, fluorosilicone is an extremely clean material that does not impart odor or taste. It resists extreme temperatures, ozone, and UV radiation. It has premium fuel and oil resistance and can meet MIL-DTL-25988 requirements for aeronautical applications. It also has good water, oxidation, and weathering resistance.

As a silicone-based material, fluorosilicone can be cured using both addition and condensation cure systems. Its polymer structure consists of a PDMS backbone with various levels of fluorination. The varying level of fluorination, molecular weight, and crosslink density determine the material’s characteristics.

The resulting materials are highly resistant to oxidation, aging, and abrasion. The O-rings are typically manufactured using a vulcanizing agent to improve their mechanical properties. To maintain this pliable material, it is important to avoid stress, compression, and shear. These o-rings are used in aerospace, automobile, electromechanical, electronic, and architectural applications. They combine the good high and low temperature capabilities of silicone with the fuel and oil resistance of fluorocarbons.


FEP (Fluorinated Ethylene Propylene) is melt-processable fluoropolymer that possesses most of the properties of PTFE. It can be moulded, extruded and welded using conventional injection and extrusion processes. It can also be formed into complex profiles that cannot easily be produced from paste extrusion fluoropolymers. It has a lower maximum working temperature than PTFE but is still suitable for cryogenic applications. FEP is used as a coating or liner in a variety of industrial equipment, including tubing and electrical insulation, as well as food processing machines.

FEP is resistant to a wide range of chemicals, solvents and temperatures. It is also extremely durable and possesses excellent mechanical, thermal and electrical properties. Unlike PTFE, it is soft and has a low tensile strength, but it remains unaffected by chemical degradation or weathering.

DuPont FEP industrial coatings are a popular option for many applications that require chemical resistance Silicone Parts Manufacturer and nonstick qualities. The coatings are formulated for moderate abrasion and cure at a lower temperature than other coatings. This makes them ideal for applications that require a long life in harsh environments.

FEP is also used as a coating for the molding industry, which eliminates the need for oil as a release agent during the manufacturing process. It can be used to coat molding components and molds and is often bonded with a resin to produce sheet-lined products. It is also an in-demand material for high-performance electronics because of its chemical and thermal performance.


PTFE, or Polytetrafluoroethylene, is one of the most popular materials for sealing applications. It is a low-reactivity material that has excellent tolerance for friction, chemical resistance, and temperature. It is also non-stick and non-magnetic. These characteristics make PTFE ideal for industrial and medical equipment, such as catheters, syringes, and bio-containment vessels.

It is available in several forms, including granular, dispersion, and fine powder. It is manufactured through a suspension polymerization reaction, and the resulting product can be processed by compression molding. PTFE can also be used for coatings, metal castings, and in films. It can be used as an additive to other materials to boost their abrasion and friction resistance.

A common type of PTFE is bronze-filled, which improves thermal and electrical conductivity. It can be compounded to meet FDA, USP Class VI, USDA, and 3-A standards, and it has high ozone and UV radiation resistance. It is physiologically neutral and has good resistance to fungal growth.

It has many benefits in cookware, as it is nonstick and can be used with a lower heat. It also protects your pan from scratches and dings, so you can use it for years to come. PTFE also has great heat resistance and is safe for use with metal utensils. However, it is important to avoid using PTFE on high heat, as it can warp and crack if overheated.


VMQ (vinyl methyl silicone rubber) is an elastomer that has one of the widest temperature range capabilities of any elastomer. It also has good cold flexibility and excellent ozone and weather resistance, along with insulating and physiologically neutral properties. It is often used to produce o-rings and gaskets.

Silicone O-rings made from VMQ are typically lubricated with oil, grease, or other lubricants. They can be produced in any size or shape and are used in many industrial applications. VMQ silicone O-rings are usually molded through injection molding or compression molding. They can be molded into round or oval shapes and can also be formed in other cross-sections, depending on the application.

In addition to their temperature tolerance, VMQ O-rings have great resistance to ozone, weathering, and chemicals. They are also resistant to oxidation, oxygen erosion, and high molecular weight chlorinated aromatic hydrocarbons. They can withstand temperatures ranging from -55°C to 200°C.

VMQ silicone O-rings are commonly used in food, beverage, and pharmaceutical applications. They are also used in the aerospace and automotive industries. These O-rings are a popular choice for harsh environments, as they can resist extreme temperatures and are non-toxic. They also have good flexibility and compression set resistance. However, they are not recommended for use in acids, EP fluids, fuels, brake fluids, and phenolics. They should also not be used in dynamic applications.

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