Auto NBR Rubber Seals O Ring

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Auto NBR rubber seals O ring

NBR (nitrile butadiene rubber) is a material commonly used in automotive battery seals.

Material Properties: NBR rubber has good oil and chemical resistance, making it suitable for use with liquid electrolytes in battery environments. It also has high wear resistance and anti-aging properties and can maintain its elasticity and sealing properties under various temperature conditions.

Sealing performance: NBR seals can provide excellent sealing performance, effectively preventing electrolyte leakage inside the battery and external moisture from entering. This helps protect the components inside the battery and maintains proper battery operation.

Temperature range: NBR seals are generally able to operate in a wide temperature range, with good performance stability from low to medium to high temperatures. This makes it suitable for automotive battery applications in a variety of climate conditions.

Processing and Manufacturing: NBR rubber is easy to process and manufacture and can be formed by molding, extrusion, or injection molding. This makes it more efficient and economical to produce high-volume automotive battery seals.

NBR (nitrile butadiene rubber) automotive battery seals have the following physical, chemical, mechanical and Processing performance.

1. Physical properties

Density: The density of NBR is generally between 1.0 and 1.2 g/cm3, making it moderately lightweight.
Elasticity: NBR has good elasticity and can maintain its shape and seal under changing environmental conditions.
Wear resistance: NBR seals have certain wear resistance and can resist wear and damage during use.

2. Chemical properties

Oil resistance: NBR has excellent oil resistance and can resist the erosion of a variety of lubricants, fuels and chemical solvents.
Chemical Resistance: NBR has good resistance to many common chemicals and solvents, including acids, alkalis, ketones, and alcohols.
Oxidation resistance: NBR seals have certain oxidation resistance and can maintain their performance under long-term exposure to oxygen and high-temperature environments.

3. Mechanical behavior

Tensile strength: NBR has high tensile strength and can withstand certain tensile and compressive forces.
Ductility: NBR seals have a certain degree of ductility and can maintain their elasticity and sealing properties under strain and deformation.
Tear Resistance: NBR has good tear resistance and can resist tearing and damage.

4. Processing performance

Formability: NBR rubber is easy to process and form, and complex-shaped seals can be manufactured by molding, extrusion, or injection molding.
Adhesion: NBR has good adhesion and can bond firmly with other materials such as metal or plastic.
Cutability: NBR seals are easy to cut and process into the desired size and shape.
It is important to note that the performance of specific NBR seals may vary based on different manufacturers, formulations, and treatments.

DIN 3760 Standard size range refers:

Here are some common NBR car battery seal shapes:

O-ring: O-ring is one of the most common seal shapes and is usually used to seal circular or semi-circular joints. It has a circular cross-section that provides effective sealing and waterproofing.

Square or Rectangular Weather Strip: Square or rectangular weather strips are common shapes used to seal straight or flat joints. They typically have a rectangular or square cross-section, providing a large sealing area.

U-shaped sealing strip: A U-shaped sealing strip has a U-shaped cross-section and is often used to seal curved or irregular-shaped joints. They are suitable where elasticity and good sealing properties are required.

Specially Shaped Seals: Some automotive batteries may require specifically shaped seals to accommodate specific construction or design requirements. These specialized shape seals can be customized to specific battery sizes and construction.

NBR (nitrile butadiene rubber) automotive seals are often tested according to different applications and industry standards.

ASTM D2000: This is a standard developed by the American Society for Testing and Materials (ASTM) to classify and standardize rubber products. The ASTM D2000 standard covers the testing requirements for the physical properties, chemical properties, thermal properties, oxidation resistance, etc. of rubber materials.

ISO 1629: This is a standard published by the International Organization for Standardization (ISO) that defines and classifies rubber materials. The ISO 1629 standard includes requirements for the naming, labeling, and testing of basic physical properties of rubber materials.

ISO 815: This is a standard published by ISO for measuring the hardness of rubber materials. The ISO 815 standard uses the Shore hardness test method to evaluate the hardness of rubber materials by measuring their degree of rebound.

ISO 37: This is an ISO-published standard for measuring the tensile properties of rubber materials. The ISO 37 standard includes test methods for measuring tensile strength, elongation, breaking strength, and other parameters.

ASTM D471: This is a standard established by ASTM to evaluate the oil resistance of rubber materials. The ASTM D471 standard evaluates the oil resistance of rubber materials by exposing them to different types of liquid media and measuring changes in volume and mass.

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NBR O-ring for Battery, can customized for your requirements.

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