High Rebound Food Grade Silicone Rubber Balls Supplier

This solid high-rebound silicone ball is compression molded in one piece from food-grade silicone, featuring a smooth, impurity-free surface plus heat resistance, wear resistance and resistance to deformation. Silicone rubber balls another name is VMQ balls .The standard sizes range from 5mm to 60mm, with Shore A hardness from 25 to 90 and multiple color options; custom sizes and hardness are available to drawing or sample. Silicone balls suitable for vibrating screen cleaning balls, grain cleaning machines, dry-cleaning dryer balls, leather softening balls and household filler applications, with factory bulk supply support.

Technical Specification and Test Standard for Silicone Rubber Balls

Usage Note: The outstanding advantages of silicone balls include wide temperature range (-50°C to +200°C), high resilience, ozone & aging resistance and food-contact compliance. However, they have limited resistance to oil, hydrocarbons, concentrated acids and alkalis. When selecting materials, working conditions involving oil, fuel, aromatic hydrocarbons, concentrated acids and concentrated alkalis should be excluded first. Compression set is a critical indicator for bouncing balls and sealing balls. Bench test verification based on actual compression ratio, temperature and duration is recommended. The physical property values in this table are based on general VMQ data. Differences exist among different formulations (platinum-cured / peroxide-cured, low compression set systems, food-grade systems), and these data shall not be directly used as acceptance specifications.

Multi-Material Solid Rubber Balls Custom Sealing Solutions

We supply solid rubber balls in multiple material grades: FKM/FPM, FFKM, PTFE, NBR, EPDM and VMQ silicone, with operating temperatures ranging from -50°C to +320°C. Each material features unique performance in oil resistance, chemical compatibility and thermal stability for both high and low temperature service. They are widely used for valve sealing, pump sealing, pipeline sealing and vibrating sieve mesh cleaning. Customization on material, dimension, hardness and tolerance is available according to your working conditions. Samples and mass production orders are welcomed.

NBR(Buna-a，Niteile Rubber）

Oil&Water, Wear，Low temperature Resistance 

Temp Range -40℃-120℃ 

Color Black 

Hardness 50/60/70/80/90 Shore A

FKM (FPM,Viton,Fluoro Rubber)

Oil & Hydraulic Fluids, Chemical, High Temperature Resistance 

Temp Range -20℃-220℃ 

Color Black Brown Green 

Hardness 70/75/80/85/90 Shore A

EPDM Rubber （EPM）

Cooling Liquid & Brake Fluid，Ozone，Hot Water & Steam Resistance 

Temp Range -45℃-150℃ 

Color Black

Hardness 40/50/60/70/80/90 Shore A

VMQ(Silicone Rubber)

Heat & Low Temperature ,Ozone ,Aging &Weather Resistance 

Temp Range -55℃-204℃ 

Hardness 40/50/60/70 Shore A

PTFE (Teflon,Polytetrafluoroethylene)
Excellent Electrical Insulation, Chemical & Corrosion Resistance, Low Friction
Temp Range -200℃-260℃
Color White
Hardness 50~65 Shore D

Application Areas of Silicone Bouncy Balls:

With high resilience, wear resistance, temperature resistance and optional food-grade compounds, silicone bouncy balls are mainly used in the following areas:

1. Vibrating Screen Cleaning: Used as screen-cleaning bouncing balls in rotary, circular and linear vibrating screens for chemical, food, grain and mining applications, helping prevent screen blinding and improve screening efficiency.
2. Grain and Food Processing: Used in grain cleaning machines, screening machines and food vibrating screens for screen cleaning and bouncing assistance; food-grade compounds are available for food-contact applications.
3. Dry Cleaning and Leather Care: Used as dryer balls in dry-cleaning machines and as softening/beating balls for leather garments, helping restore fluffiness and softness.
4. Household Buffering and Filling: Used for cabinet doors, furniture and daily-use products for filling, cushioning and anti-collision purposes.
5. Toys and Fitness: Used for bouncy balls, massage balls, hand-grip balls and other toys and fitness products.
6. Industrial Bouncing and Cushioning: Used in applications requiring high resilience and compression resistance for cushioning, vibration and bouncing.

Silicone Ball Diameter Tolerance Table — ISO 3302-1:2014 (Fixed Dimension, ± mm)

Additional Tolerances for Silicone Balls

OEM & ODM Service

We provide professional OEM and ODM services for our rubber balls, offering comprehensive customization to meet your specific project requirements.

Silicone Ball Inspection Content

Silicone ball inspection should cover appearance, dimensional accuracy, elastic performance, heat aging, hygiene compliance and application performance. The specific items can be adjusted according to the product application, such as vibrating screen cleaning balls, food-grade bouncy balls or sealing balls.

• Visual Inspection
  Check the ball surface for smoothness, bubbles, cracks, impurities, dents, scratches and obvious mold lines. Color should be uniform, and food-grade products should be free of odor and visible contamination.
• Dimension and Sphericity Inspection
  Measure diameter, roundness and diameter tolerance using calipers, an optical comparator or non-contact measurement. Because silicone balls are soft, contact measurement force should be controlled to avoid compression deformation affecting readings.
• Hardness Test
  Measure Shore A hardness per ASTM D2240. The standard range is 25–90 Shore A, with batch tolerance generally controlled at ±5 Shore A.
• Rebound Resilience Test
  Evaluate rebound rate and elastic recovery after repeated compression, suitable for bouncy balls, screen-cleaning balls and cushioning balls.

Packing & Payment & Shipping

• Package:We provide standard cartons, pallets and wooden cases. Custom packaging such as custom logo print is available upon request to protect goods well for different shipments.
• Payment Methods:Multi-currency settlement (CNY, USD, EUR, etc.). Multiple payment options including T/T, PayPal. Local bank transfer is available for some countries for faster transactions.
• Shipping Ways:We offer international express, air freight, sea freight and railway transport. You can also appoint your own forwarder for flexible delivery arrangements.

Products Type

As a professional manufacturer of rubber sealing and transmission components, we are dedicated to providing global customers with high-quality, diversified rubber products and customized solutions. Our core production lines comprehensively cover the following six major categories:

· Rubber Balls: Featuring excellent elasticity and wear resistance, widely used in various pumps, valves, and mechanical transmission systems.
· ED rings: Specifically designed for demanding working conditions, providing outstanding static and dynamic sealing performance.
· Oil seal: Effectively prevents lubricant leakage and external contaminant intrusion, ensuring the safe operation of machinery.
· Special and OEM seal: Equipped with strong R&D and tooling capabilities, we support non-standard customization to precisely meet your specific drawings and sample requirements.
· O-Rings: Available in a complete range of specifications and diverse materials (such as NBR, FKM, EPDM, etc.), making them the ideal choice for basic sealing applications.
· Bonded Seals: Perfectly combining the sealing properties of rubber with the strength of metal, offering high-pressure resistance and anti-deformation characteristics.

From mass production of standard parts to highly complex customized requirements, we strictly control the production process to ensure that every product leaving our factory possesses exceptional quality and reliability.