Can TPE seal ring replace silicone seal ring?

The silicone sealing ring is mainly used for waterproof sealing and preservation of daily supplies such as crisper, rice cooker, water dispenser, lunch box, insulated box, insulated box, water cup, oven, magnetized cup, coffee pot and so on. As the application of TPE continues to expand, some people ask whether TPE sealing rings can replace silicone sealing rings?

First of all, let's look at the advantages and disadvantages of silicone seals and TPE seals.

Silicone sealing ring

advantage

1. Tensile strength can reach 1500PSI and tear resistance can reach 88LBS after the modulation formula.

2, good elasticity and good compression distortion.

3, has good resistance to neutral solvents.

4, with good heat resistance. Silicone rubber has much better heat resistance than ordinary rubber, can be used almost forever at 150° without performance changes, can be used continuously at 200° for 10,000 hours, and can be used for a period of time at 350°. Widely used in situations requiring heat resistance, hot water bottle sealing ring, pressure cooker ring heat resistant handle.

5, with good cold resistance. Ordinary rubber delay is -20 ° -30 °, that is, silicone rubber still has good elasticity when it is -60 ° -70 °, and some special formulations of silicone rubber can also withstand extremely low temperatures, such as: low-temperature sealing rings.

6, good resistance to ozone and oxide erosion.

7, good electrical insulation performance.

8. Good heat insulation and heat dissipation.

shortcoming

It is not recommended for use in most thick-shrunk solvents, oils, thick-shrunk acids and diluted sodium hydroxide.

TPE sealing ring

TPE sealing material products are divided into oil resistant and non-oil resistant two kinds, oil resistant grade can be resistant to toluene, gasoline, oil, alcohol, etc., the product elasticity is good compression deformation, and can be bonded with PP!

Material characteristics:

1, performance advantages: - excellent elasticity, oil resistance, weather resistance, aging resistance, deflection resistance, ozone resistance and chemical properties.

2, processing advantages: - plastic processing methods: injection molding, extrusion, blow molding, simple processing, hot welding, small tolerance, high precision, rich color.

3, industrial progress: compared with rubber processing, it saves the process of mixing, mixing and vulcanization, reducing energy consumption, labor consumption and environmental damage.

4, at the same time, the waste can be fully recycled, greatly reducing the processing cost of products, has become the replacement of traditional rubber materials, but also environmentally friendly materials.

To return to the question at the beginning, can TPE replace silicone rubber as a sealing ring? It depends on what industry and environment, if it is an ordinary building, door seal, refrigerator, it is generally OK. Cars still use EPDM and TPV more. If you need heat resistance, it is still silicon rubber.