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O-ring
qiniu
O-ring 1
As a key sealing component, the O-ring of electrical accessories has the characteristics of excellent sealing performance, good product quality, and resistance to deformation. Its dynamic pressure sealing service life is 5-10 times longer than conventional rubber sealing products, and in some scenarios, it can have the same service life as the sealing substrate. It can effectively prevent liquid and gas medium leakage under static and dynamic conditions, and is suitable for axial reciprocating motion and low-speed rotational motion. In addition, the product has low friction resistance, with dynamic and static friction forces only 1/2-1/4 of ordinary rubber rings, which can eliminate the "crawling" phenomenon under low speed and low pressure. At the same time, it has high wear resistance and automatic elastic compensation function, and supports oil-free lubrication sealing.
Material and specification selection of O-ring for electrical accessories
Mainstream materials and characteristics
Common materials for O-ring of electrical accessories include nitrile rubber (NBR), silicone rubber, fluororubber (FKM), polytetrafluoroethylene (PTFE), etc., which can be selected according to the usage scenario:
Nitrile rubber (NBR): oil resistant, wear-resistant, suitable for hydraulic oil and emulsion sealing under general working conditions.
Silicone rubber: resistant to high temperatures (-40~+200 ℃) and aging, suitable for high temperature environments in electronic devices.
Fluororubber (FKM): resistant to strong corrosion and high voltage, suitable for chemical or high-voltage electrical equipment.
Polytetrafluoroethylene (PTFE): resistant to chemical corrosion and excellent insulation, suitable for sealing high-precision electronic components.
Specifications and standards
The inner diameter of the product starts from 0.3mm and the wire diameter ranges from 0.3mm to tens of millimeters, supporting customized production. For example, model 851.5 (inner diameter 8mm, wire diameter 1.5mm) is a common specification with a hardness range of 30-95 Shore A, which can be adjusted as needed.
Typical application scenarios of O-ring for electrical accessories
Electronic device sealing
Used for sensors, connectors, battery components, etc., to prevent water vapor and dust from entering and ensure circuit stability, such as mobile phone charging interfaces and smart home appliance control modules.
Electric motor and hydraulic system
As a sealing component for shafts or holes, it is suitable for motor bearings and hydraulic cylinders, such as oil seals for new energy vehicle drive motors and hydraulic pipeline seals for industrial robots.
Instrument protection
It plays a role in dust and water prevention in precision measuring equipment, such as pressure sensors in medical detectors and sealing rings in aviation instruments.
Selection suggestions and precautions
Parameter matching: Select materials based on working temperature (such as TPU material -40~+80 ℃, CPU material -40~+120 ℃), pressure (≤ 32MPa), and medium type (hydraulic oil, water, chemical reagents, etc.).
Quality verification: Priority should be given to products certified by the ISO system to ensure that each component undergoes size, hardness, and sealing testing to avoid leakage due to tolerances.
Installation points: Avoid scratching the sealing ring with sharp edges, keep the sealing surface clean during installation, and control the compression amount within 15% -30% to optimize the service life
Please provide the following information to facilitate the accurate quotation of our factory personnel!
1. Dimensional drawings or samples of products
2. Product hardness color requirements (no relevant information we will be customized according to conventional industry standards for you)
3. The quantity requirements of the product (the more the relative number of customized goods, the more cost-effective)
4. The time of product production and processing (the time is related to the number of products and whether the mold is opened. The normal time is 3-10 days)
Rubber material description:
Silicone (VMQ): high temperature resistance, non-toxic, good water resistance, oil resistance general temperature resistance (-60~350) Butanning rubber (NBR): good oil resistance, good sealing effect, temperature resistance (-50~120) fluorine adhesive (FPM): wear resistance, high temperature resistance, oil resistance, corrosion resistance, good aging resistance, Temperature resistance (-20~300) EPDM: good aging resistance, poor oil resistance, temperature resistance (-50~150) Natural rubber: good elasticity, good alkaline resistance, poor oil resistance, temperature resistance (-30~110)
As a key sealing component, the O-ring of electrical accessories has the characteristics of excellent sealing performance, good product quality, and resistance to deformation. Its dynamic pressure sealing service life is 5-10 times longer than conventional rubber sealing products, and in some scenarios, it can have the same service life as the sealing substrate. It can effectively prevent liquid and gas medium leakage under static and dynamic conditions, and is suitable for axial reciprocating motion and low-speed rotational motion. In addition, the product has low friction resistance, with dynamic and static friction forces only 1/2-1/4 of ordinary rubber rings, which can eliminate the "crawling" phenomenon under low speed and low pressure. At the same time, it has high wear resistance and automatic elastic compensation function, and supports oil-free lubrication sealing.
Material and specification selection of O-ring for electrical accessories
Mainstream materials and characteristics
Common materials for O-ring of electrical accessories include nitrile rubber (NBR), silicone rubber, fluororubber (FKM), polytetrafluoroethylene (PTFE), etc., which can be selected according to the usage scenario:
Nitrile rubber (NBR): oil resistant, wear-resistant, suitable for hydraulic oil and emulsion sealing under general working conditions.
Silicone rubber: resistant to high temperatures (-40~+200 ℃) and aging, suitable for high temperature environments in electronic devices.
Fluororubber (FKM): resistant to strong corrosion and high voltage, suitable for chemical or high-voltage electrical equipment.
Polytetrafluoroethylene (PTFE): resistant to chemical corrosion and excellent insulation, suitable for sealing high-precision electronic components.
Specifications and standards
The inner diameter of the product starts from 0.3mm and the wire diameter ranges from 0.3mm to tens of millimeters, supporting customized production. For example, model 851.5 (inner diameter 8mm, wire diameter 1.5mm) is a common specification with a hardness range of 30-95 Shore A, which can be adjusted as needed.
Typical application scenarios of O-ring for electrical accessories
Electronic device sealing
Used for sensors, connectors, battery components, etc., to prevent water vapor and dust from entering and ensure circuit stability, such as mobile phone charging interfaces and smart home appliance control modules.
Electric motor and hydraulic system
As a sealing component for shafts or holes, it is suitable for motor bearings and hydraulic cylinders, such as oil seals for new energy vehicle drive motors and hydraulic pipeline seals for industrial robots.
Instrument protection
It plays a role in dust and water prevention in precision measuring equipment, such as pressure sensors in medical detectors and sealing rings in aviation instruments.
Selection suggestions and precautions
Parameter matching: Select materials based on working temperature (such as TPU material -40~+80 ℃, CPU material -40~+120 ℃), pressure (≤ 32MPa), and medium type (hydraulic oil, water, chemical reagents, etc.).
Quality verification: Priority should be given to products certified by the ISO system to ensure that each component undergoes size, hardness, and sealing testing to avoid leakage due to tolerances.
Installation points: Avoid scratching the sealing ring with sharp edges, keep the sealing surface clean during installation, and control the compression amount within 15% -30% to optimize the service life
Please provide the following information to facilitate the accurate quotation of our factory personnel!
1. Dimensional drawings or samples of products
2. Product hardness color requirements (no relevant information we will be customized according to conventional industry standards for you)
3. The quantity requirements of the product (the more the relative number of customized goods, the more cost-effective)
4. The time of product production and processing (the time is related to the number of products and whether the mold is opened. The normal time is 3-10 days)
Rubber material description:
Silicone (VMQ): high temperature resistance, non-toxic, good water resistance, oil resistance general temperature resistance (-60~350) Butanning rubber (NBR): good oil resistance, good sealing effect, temperature resistance (-50~120) fluorine adhesive (FPM): wear resistance, high temperature resistance, oil resistance, corrosion resistance, good aging resistance, Temperature resistance (-20~300) EPDM: good aging resistance, poor oil resistance, temperature resistance (-50~150) Natural rubber: good elasticity, good alkaline resistance, poor oil resistance, temperature resistance (-30~110)
注: 建议图片大小150px*50px 
