Silicone sealing rings are mainly used for waterproof sealing and preservation of daily necessities such as fresh-keeping boxes, rice cookers, water dispensers, lunch boxes, insulation boxes, incubators, water cups, ovens, magnetized cups, coffee pots, etc. As the application of TPE continues to expand, some people ask, can TPE seals replace silicone seals? First, let's take a look at the advantages and disadvantages of silicone seals and TPE seals.

Silicone sealing ring:

Advantages:
1. Tensile strength can reach 1500PSI and tear resistance can reach 88LBS after preparation.
2. Good elasticity and good compression distortion.
3. Good resistance to neutral solvents.
4, with excellent heat resistance. Silicone rubber has much better heat resistance than ordinary rubber, can be used almost forever at 150° without change in performance, can be used continuously for 10,000 hours at 200°, and can also be used for a period of time at 350°. Widely used in occasions requiring heat resistance, thermos seal ring, pressure cooker ring heat-resistant handle.
5, with excellent cold resistance. The delay of ordinary rubber is -20°-30°, that is, silicone rubber still has good elasticity at -60°-70°, and some specially formulated silicone rubber can also withstand extremely low temperatures, such as low temperature sealing rings.
6. Excellent resistance to ozone and oxide erosion.
7. Excellent electrical insulation properties.
8. Good heat insulation and heat dissipation.

shortcoming:
It is not recommended to be used in most thickened solvents, oils, thickened acids and diluted sodium hydroxide.

TPE sealing ring:
TPE sealing ring products are divided into oil-resistant and non-oil-resistant. The oil-resistant grade can be resistant to toluene, gasoline, engine oil, alcohol, etc. The product has good elasticity and excellent compression resistance and permanent deformation, and can be bonded with PP!

Material characteristics:
1. Performance advantages: excellent elasticity, oil resistance, weather resistance, aging resistance, flex resistance, ozone resistance and chemical resistance.
2. Processing advantages: - Plastic processing methods: injection molding, extrusion, blow molding, easy processing, thermal welding, small tolerance, high precision, rich colors.
3. Industrial progress: Compared with rubber processing, the processes of mixing, internal mixing and vulcanization are omitted, and energy consumption, labor consumption and environmental damage are reduced.
4. At the same time, the waste can be 100% recycled, which greatly reduces the processing cost of the product. It has become the latest material to replace traditional rubber and the latest environmental protection material.

Returning to the question at the beginning, can TPE replace silicone rubber as a sealing ring? It depends on the industry and environment. If it is ordinary buildings, door seals, and refrigerators, it is generally ok. The car uses more EPDM and TPV. If it needs to be heat-resistant, it is still silicone rubber.