Moken (Xiamen) Industrial Co., Ltd.
mk_potter@mkseal.com
Leave Your Message
Rubber Balls (1).jpg
Rubber Balls (2).jpg
Rubber Balls (3).jpg
Rubber Balls (4).jpg
Rubber Balls (5).jpg

Multi-Purpose Elastic Rubber Sealing Balls from China Suppliers and Factory - Versatile Sealing Solutions

Definition and Classification of Rubber Balls
Rubber balls are hollow, compression-molded products made from various types of rubber. Once inflated, these balls exhibit elasticity and function as mechanical seals, typically with a hardness ranging from 50 to 90 degrees. As a leading China supplier and factory of rubber balls, we offer a wide range of options to meet diverse needs.
• By material: Our rubber balls can be categorized into several types, including NBR (Nitrile Butadiene Rubber) balls, natural rubber balls, SBR (Styrene-Butadiene Rubber) balls, Buna rubber balls, CR (Chloroprene Rubber) balls, EPDM (Ethylene Propylene Diene Monomer) balls, HNBR (Hydrogenated Nitrile Butadiene Rubber) balls, silicone rubber balls, FKM (VITON) fluoro rubber balls, FLS (Fluorosilicone Rubber) balls, and PU (Polyurethane Rubber) balls.
• By use: Our offerings include ordinary rubber balls, bouncy balls, silicone rubber balls, and polyurethane rubber balls, catering to various applications.
• By structure: We classify our products into bladder-type balls (such as basketballs, footballs, volleyballs with a framework layer, rhythmic gymnastics balls, and tennis balls without a framework layer) and bladder-less balls. With our extensive expertise and facilities in China, we are your trusted supplier and factory for high-quality rubber balls.

    Contact us
    Product Details

    Characteristics and Applications of Typical Materials

    Rubber Balls (3)
    01
    NBR Rubber Balls: They have excellent oil resistance, abrasion resistance, and aging resistance. They are suitable for oil - resistant products such as oil sheets, gaskets, oil - resistant hoses, conveyor belts, and printing rollers.
    EPM/EPDM Rubber Balls: They feature good aging resistance, ozone resistance, resistance to polar liquids, and excellent electrical properties. They are used in wire coatings, automotive seals, window rubber, conveyor belts, etc.
    PU Rubber Balls: They have high mechanical strength and are suitable for items that bear strong forces, such as industrial rolls, solid tires, high - pressure packings, and mold pads.
    Rubber Balls (4)
    02
    Silicone Rubber Balls (Si): They have outstanding heat and cold resistance as well as good oil resistance. They are used in heat - and cold - resistant scenarios (such as packings, gaskets, oil seals, anti - vibration rubber), and in electrical insulation and the medical field.
    FPM Rubber Balls: They have excellent heat resistance and chemical resistance. They are suitable for scenarios that require oil and chemical resistance, such as rocket packings, corrosion - resistant packings in chemical plants, hoses, and pump parts.
    CR Rubber Balls: They have good weather resistance, ozone resistance, and heat resistance, with relatively balanced chemical resistance. They are used in wire coatings, conveyor belts, anti - vibration rubber, adhesives, paints, etc.

    Production and Inspection

    Rubber Balls (5)
    01

    Production Process

    There is usually a mold line (parting line) in the middle of a rubber ball, which may produce flash, affecting the sealing and appearance. Some enterprises (such as Hebei Dingfeng Rubber and Plastic Pipe Industry Co., Ltd.) adopt grinding and polishing processes to make the rubber ball surface smooth, flash - free, with precise roundness tolerance and good sealing effect.
    Rubber Balls (1)
    02

    Quality Inspection

    It includes items such as appearance, dimensions, material properties, and surface roughness to ensure that the product meets the usage requirements.

    Application Fields

    Rubber Balls (2)
    01

    Industrial Field:

    In vibration screening equipment (such as linear vibrating screens and rotary vibrating screens), rubber balls are key spare parts for anti - blocking screen meshes. They can improve the screen penetration rate by reciprocatingly hitting the screen mesh and also dampen vibration to extend the equipment's service life.
    They are widely used in industries such as food, medicine, mining, machinery, metal metallurgy, and grain cleaning machines, meeting the requirements of sealing, abrasion resistance, and chemical corrosion resistance in different scenarios.
    Rubber Balls (3)
    02

    Special Fields:

    Dock Protection: For example, the super - large floating rubber fenders independently developed by Dalian Dianfeng Group (with an outer diameter of 5700 mm and a length of 6500 mm) use their good reaction force and energy absorption properties to protect ships and docks, suitable for the docking of large - scale ships.
    Medical Field: Medical rubber balls (mostly made of natural rubber or silicone rubber) are used to suck up liquids such as liquid medicine, blood, and pus. They are required to have good elasticity, strong airtightness, and be not easy to break, and their surfaces are specially treated to prevent cross - infection.

    Frequently Asked Questions

    1. What are the main differences between NBR and EPDM rubber balls?

    NBR rubber balls offer excellent oil resistance, abrasion resistance, and aging resistance, making them ideal for oil-resistant products like hoses and gaskets. In contrast, EPDM rubber balls feature good ozone/aging resistance, resistance to polar liquids, and superior electrical properties, which are suitable for wire coatings and automotive seals.

    2. When should Silicone (Si) and FPM rubber balls be selected?

    Silicone rubber balls are selected for outstanding heat/cold resistance, electrical insulation, and medical applications. FPM rubber balls are best for harsh environments requiring extreme heat and chemical resistance, such as rocket packings and corrosion-resistant parts in chemical plants.

    3. How do manufacturers solve the mold line and flash issue on rubber balls?

    To prevent sealing and appearance issues caused by parting lines and flash, specialized companies implement grinding and polishing processes. This makes the rubber ball surface smooth and flash-free, ensuring precise roundness tolerance and a reliable sealing effect.

    4. What parameters are checked during the quality inspection of rubber balls?

    The quality inspection process thoroughly checks the appearance, exact dimensions, material properties, and surface roughness of the rubber balls to ensure they fully meet performance and application requirements.

    5. What role do rubber balls play in vibration screening equipment?

    In vibrating screens, rubber balls act as key anti-blocking components. By reciprocatingly hitting the screen mesh, they prevent clogging to improve screen penetration while simultaneously dampening vibration to extend the service life of the machinery.

    6. How are rubber balls used in specialized fields like dock protection and medical applications?

    In dock protection, massive floating rubber fenders absorb energy and protect ships during docking. In the medical field, high-elasticity, airtight silicone or natural rubber balls are used to safely suction liquids like blood and medicine without breaking.

    Leave Your Message