Moken (Xiamen) Industrial Co., Ltd.
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O-Ring for Water Purifiers & Direct Drinking Faucets - Quality China Suppliers & Factory Products

Product Features
- **Sealing Performance**: O-rings are essential components for ensuring effective sealing in water purifiers and direct drinking faucets. Their primary function is to prevent water leakage at the junctions of various components, guaranteeing that water flows along designated paths.
- **Elasticity**: Designed with excellent elasticity, these O-rings form a tight seal on the surfaces they adhere to after being compressed during installation. This property allows them to accommodate minor variations in the spacing between different components.
- **Chemical Stability**: These O-rings are manufactured to resist common water-related chemicals such as chlorine, amines, acids, and bases. This durability ensures that they remain corrosion-free in a clean water environment.
As a leading China factory and supplier of high-quality O-rings, we are committed to providing products that meet industry standards and customer needs.

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    Product Details

    Features

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    Usage temperature

    01
    -Generally speaking, O-rings commonly used in water purifiers and direct drinking faucets, such as those made of ethylene propylene diene monomer (EPDM) material, can work in the range of -40 ℃ to 150 ℃ and can stably perform in household water environments at room temperature (5 ℃ -35 ℃). The working temperature range of nitrile rubber (NBR) material is usually between -40 ℃ and 120 ℃, which is suitable for water purification processes that generally do not come into contact with high-temperature hot water.
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    application environment

    02
    -Mainly used in water purification equipment and supporting direct drinking faucets in homes, offices, and other places. The environment is relatively mild and mainly comes into contact with municipal water that has been preliminarily treated or filtered by water purifiers. The pressure is generally within the normal range of household water supply pressure (about 0.1-0.6 MPa).

    Application & Advantages

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    Application scenarios

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    -In water purifiers, O-rings are commonly used at filter interfaces, inlet and outlet ports, and water storage tank connections to prevent water leakage, ensure filtration efficiency, and ensure normal equipment operation.
    -In direct drinking faucets, O-rings are generally installed on valve cores, water outlets, and other parts to ensure sealing when the faucet is turned on and off, prevent water leakage, and ensure the hygiene and normal supply of drinking water.
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    Advantages and disadvantages

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    -Advantages: Simple structure, easy installation, and low cost; Good sealing effect, can effectively prevent water leakage; Diverse size specifications to meet the needs of different devices; Wide range of material selection, able to choose suitable materials according to different application environments.
    -Disadvantages: Long term use may lead to a decrease in sealing performance due to aging and wear; High requirements are placed on the flatness and cleanliness of the installation surface, otherwise it may affect the sealing effect; Performance degradation or damage may occur in environments with high temperatures, high pressures, or special chemical substances.

    Material selection & Effect

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    Material selection

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    -Ethylene propylene diene monomer (EPDM): good water resistance, good resistance to hot water and steam, strong anti-aging performance, good chemical stability, and resistance to some chemicals in water, suitable for use in parts contacting hot water, such as hot water purifiers or hot water channels of direct drinking faucets.
    -Nitrile rubber (NBR): Outstanding oil resistance, although mainly used in environments that come into contact with oil, it is also suitable for parts that have certain requirements for oil resistance (such as parts that may come into contact with a small amount of oil) or do not come into contact with high-temperature hot water in the field of water purification, with relatively low cost.
    -Silicone rubber (VMQ): It has excellent high and low temperature resistance, can work in the temperature range of -60 ℃ to 200 ℃, is non-toxic and odorless, meets drinking water hygiene standards, and is commonly used in key sealing parts that come into direct contact with drinking water.
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    Effect

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    -The main function is to seal and prevent water leakage during the operation of the water purifier and direct drinking faucet, ensuring the normal operation of the equipment and the hygiene and safety of drinking water. At the same time, good sealing can maintain stable pressure inside the equipment, improving its service life and performance.

    Frequently Asked Questions (FAQ)

    Q1: What are the working temperature ranges for EPDM and NBR O-rings?

    EPDM O-rings generally operate between -40 ℃ and 150 ℃, making them ideal for room temperature and hot water environments. NBR O-rings typically operate between -40 ℃ and 120 ℃, which is suitable for standard temperature water filtration lines.

    Q2: What is the typical water pressure these O-rings can withstand?

    These O-rings are designed to work reliably under normal household municipal water supply pressures, which generally range between 0.1 and 0.6 MPa.

    Q3: Where exactly are O-rings installed in water purification systems?

    They are commonly installed at filter element interfaces, inlet/outlet ports, water storage tank connections, valve cores, and faucet water outlets to prevent external leakage and ensure pressure stability.

    Q4: Why is Silicone Rubber (VMQ) chosen for direct drinking water components?

    Silicone Rubber (VMQ) is non-toxic, odorless, and has excellent high and low temperature resistance (-60 ℃ to 200 ℃). It fully meets drinking water hygiene standards, making it the safest choice for direct contact parts.

    Q5: What are the main limitations or disadvantages of using standard O-rings?

    Over time, O-rings can age and wear, leading to reduced sealing performance. They also demand high flatness and cleanliness on the installation surface and can degrade faster under extreme temperatures, pressures, or specialized chemical environments.

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