UHMWPE Ball — Material Specifications, Engineering Data & OEM Supply
Built to international industrial standards, UHMWPE Ball from HEMSUN delivers low friction and universal chemical inertness for precision valve balls. Fabricated in Dahegam, Gandhinagar, Gujarat, India from high-density UHMWPE with full material certification.
Where UHMWPE Ball is used
Sealing and flow-control element in ball valves and pump check seats, where sphericity and surface finish decide shutoff tightness and operating torque.
Selected for abrasion and impact resistance in slurry and bulk-handling duty, where wear life matters more than temperature range.
Supplied to drawing across the published range — Sub-Zero Temperature Range: Retains high impact resistance down to -150°C. — with dimensional and material reports on request.
Key properties
Abrasion Resistance
Outstanding wear resistance in abrasive chemical slurry applications.
Low Coefficient of Friction
Coefficient of friction of ~0.15 provides self-lubricated performance.
High Impact Strength
Absorbs mechanical impacts and shocks without cracking or breaking.
Zero Moisture Absorption
Hydrophobic material remains dimensionally stable in water and steam.
Chemical Inertness
Outstanding resistance to strong acids, bases, and organic solvents.
Sub-Zero Temperature Range
Retains high impact resistance down to -150°C.
Lightweight Design
Low density (~0.94 g/cm³) reduces mechanical inertia in dynamic systems.
FDA Compliant
Natural unreinforced resin is safe for food processing and sanitary systems.
Specifications
| Property | Value |
|---|---|
| Component Type & Grade | UHMWPE Ball (Specification Code HES-340) |
| Base Raw Material | UHMWPE (Virgin FDA 21 CFR 177.1550 / Custom Filled) |
| Continuous Service Temp. | -200°C to +260°C (-328°F to +500°F) |
| Tensile Strength at Break | 20 to 35 MPa (Virgin) / 14 to 25 MPa (Filled) |
| Elongation at Break | 250% to 450% (ASTM D4894) |
| Specific Gravity / Density | 2.14 to 2.18 g/cm³ (ASTM D792) |
| Dielectric Strength | 50 to 80 kV/mm (0.1 mm film) |
| Surface Roughness Finish | Diamond Polished Ra ≤ 0.20 µm to Ra ≤ 0.40 µm |
| Dimensional Tolerance | ISO Grade 1 to Grade 3 / Drawing Nominals (±0.02 mm) |
| Manufacturing & Origin | Moulded, Sintered & CNC Machined in Dahegam, Gandhinagar, Gujarat, India |
Available sizes
We supply UHMWPE balls in standard metric and fractional sizes. Custom diameters can be manufactured to match your specifications.
| Size | Metric | Inch | Tolerance |
|---|---|---|---|
| 1/4″ | 6.00 mm | 0.250″ | ±0.04 mm |
| 3/8″ | 9.52 mm | 0.375″ | ±0.04 mm |
| 1/2″ | 12.70 mm | 0.500″ | ±0.05 mm |
| 3/4″ | 19.05 mm | 0.750″ | ±0.05 mm |
| 1″ | 25.40 mm | 1.000″ | ±0.06 mm |
| 1-1/2″ | 38.10 mm | 1.500″ | ±0.10 mm |
| 2″ | 50.80 mm | 2.000″ | ±0.12 mm |
How this part is made
Resin Sourcing
High molecular weight polyethylene powders (molecular weight 3.5M+ g/mol) are used.
Compression Molding
Raw powder is filled into heavy dies and molded at high compaction pressures to prevent voids.
Thermal Sintering
Molded billets undergo a controlled thermal schedule to fuse the polymer chains.
Precision Grinding
Sintered rounds are turned on CNC lathes and centerless ground to achieve spherical roundness.
Quality Audit
Sphericity and wear resistance indicators are verified in our inspection room.
Material selection notes
Physical performance of UHMWPE Ball is governed by high-grade UHMWPE polymer formulation. Outstanding chemical resistance, high elongation (up to 400%), and low surface energy make it ideal for aggressive chemical pumps, valve seating, and pharmaceutical sanitary process lines.
How to specify your order
Procurement checklist for UHMWPE Ball: Specify outer dimensions (OD/ID/Length), chemical exposure media, temperature limits, and target delivery schedule. We assist in selecting the optimal virgin or filled material grade and provide itemized pricing with lead times.
Quality checks and inspection
Our quality department inspects UHMWPE Ball using precision coordinate measuring machines, digital surface roughness testers, and resin specific gravity balances, ensuring 100% adherence to customer drawing nominals.
Ordering and export documentation
Domestic UHMWPE Ball orders ship with GST invoice and e-way bill where applicable. Export orders include commercial invoice, packing list, and certificate of origin from our IEC-registered works. Recurring supply schedules supported with fixed drawing revision and lot numbering for plant stores Contact info@hemsun.com or sales@hemsun.com with your balls specification.
Export packing and lead time
Global shipments of UHMWPE Ball are handled by our dedicated export logistics team. Orders are packed in heavy-duty seaworthy packaging with VCI anti-corrosion barrier wrapping and dispatched with complete IEC customs documentation.
Storage and handling
Guidelines for UHMWPE Ball: Handle with clean gloves during precision assembly. Ensure mating metallic seats and shafts exhibit surface finishes of Ra ≤ 0.4 µm for maximum component operating life.
Material comparison
Compare UHMWPE properties against PTFE to choose the correct material for your assembly.
| Characteristic | UHMWPE | PTFE |
|---|---|---|
| Abrasion Wear Resistance | Outstanding (best-in-class wear life in slurries) | Moderate (PTFE is softer and wears faster in gritty media) |
| Maximum Operating Temp | Up to +90°C (low thermal limit) | Up to +260°C (high thermal limit) |
| Sphericity & Machining | Moderate (material is tough and sticky to machine) | Excellent (high dimensional accuracy) |
| Dry Friction Coefficient | Low (~0.15) | Extremely Low (0.04 - 0.10) |
Compliance & Standards
HEMSUN is a DGFT IEC registered exporter (Government of India). Diameter and sphericity are verified on calibrated gauges and the achieved grade is recorded on the inspection report; sintered density is checked per ASTM D792. A mill test certificate ships with the order. Export paperwork — commercial invoice, packing list and certificate of origin — accompanies international despatch.
Frequently Asked Questions
What makes UHMWPE Balls better than standard HDPE Balls for abrasive service?
UHMWPE has a molecular weight 10–100x higher than standard HDPE, giving it wear resistance up to 10 times greater than carbon steel and the highest impact strength of any thermoplastic. This makes UHMWPE Balls the correct choice for abrasive slurry pump check valves in mining, dredging, and mineral processing where standard HDPE or plastic balls would rapidly wear.
What is the largest UHMWPE Ball you manufacture?
We manufacture UHMWPE Balls up to 310mm diameter — one of the largest sizes available globally. Large UHMWPE Balls (150mm to 310mm) serve large-bore water infrastructure check valves and large industrial pump check valves.
Do UHMWPE Balls float on water?
Yes. UHMWPE has a specific gravity of 0.93–0.94 g/cm³ — less than water — so UHMWPE Balls float. This makes them useful for float valve applications, liquid level control systems, and applications where buoyancy is needed.
Are UHMWPE Balls food grade?
Yes. UHMWPE is FDA-compliant and widely used in food processing and dairy equipment. Our UHMWPE Balls are safe for food and pharmaceutical contact applications requiring wear resistance combined with food-grade compliance.
Why is UHMWPE better than PTFE for slurry applications?
UHMWPE has much higher abrasion resistance and toughness. It resists erosive wear from sand, grit, and particulates far better than softer PTFE.
What is the maximum operating temperature of UHMWPE balls?
The maximum continuous operating temperature is +90°C. Exceeding this temperature causes the polymer to soften and lose its wear properties.
Do UHMWPE balls float on water?
Yes. UHMWPE has a density of approximately 0.94 g/cm³, allowing it to float on water, which is useful in float valves and level indicators.
Is UHMWPE chemical resistant?
Yes. It offers excellent resistance to most acids, alkalis, and organic solvents, similar to PTFE, though it is not as universally resistant at high temperatures.
How is UHMWPE molded?
Because of its extremely high molecular weight, UHMWPE cannot be injection molded. It must be compression molded from powder under high pressure and temperature.
Are UHMWPE balls food safe?
Yes. Natural UHMWPE resin is FDA compliant and is widely used in grain silos, commercial food packaging, and food conveyor components.
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