Coloured PTFE Balls — Material Specifications, Engineering Data & OEM Supply
Produced at our Gujarat manufacturing works, Coloured PTFE Balls offers superior sealing and wear resistance for precision valve balls. Combines virgin and reinforced PTFE fluoropolymer grades with precision compression moulding and 100% batch quality inspection for OEM applications.
Where Coloured PTFE 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.
Pigmented for line identification, cavity control and visual sorting where uncoloured parts would be indistinguishable.
Key properties
Visual Identification
Immediate visual distinction for multi-line piping systems, chemical feeds, and clean-in-place lines.
Sanitary Pigments
Pigments compounded are FDA-compliant for food contact applications where required.
Chemical Inertness
Retains nearly the entire chemical resistance profile of standard virgin PTFE.
Thermal Stability
Formulated pigments withstand continuous exposure up to +260°C without fading or degradation.
Low Friction
Maintains the characteristic low-friction sliding interface for smooth valve actuation.
Precision Grinding
Finished to precise tolerances and sphericity to ensure reliable sealing.
Custom Pigment Blends
Custom color matchmaking available for specific proprietary equipment lines.
Void-Free Molding
In-house compound blending ensures zero pockets or weakness in the material matrix.
Specifications
| Property | Value |
|---|---|
| Component Type & Grade | Coloured PTFE Balls (Specification Code HES-970) |
| Base Raw Material | PTFE fluoropolymer (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
Coloured PTFE balls are available in common metric and fractional sizes. Custom diameters can be manufactured to match your specifications.
| Size | Metric | Inch | Tolerance |
|---|---|---|---|
| 1/4″ | 6.00 mm | 0.250″ | ±0.06 mm |
| 3/8″ | 9.52 mm | 0.375″ | ±0.06 mm |
| 1/2″ | 12.70 mm | 0.500″ | ±0.08 mm |
| 3/4″ | 19.05 mm | 0.750″ | ±0.08 mm |
| 1″ | 25.40 mm | 1.000″ | ±0.10 mm |
| 2″ | 50.80 mm | 2.000″ | ±0.15 mm |
| 3″ | 76.20 mm | 3.000″ | ±0.20 mm |
How this part is made
Material Selection
High-purity virgin PTFE resin is combined with FDA-compliant, heat-stable pigments (such as iron oxides or phthalocyanines).
Homogeneous Compounding
The pigments are thoroughly dry-blended with PTFE powder in high-shear mixers and compacted at 20-25 MPa in custom dies.
Oven Sintering
Green parts undergo a tightly controlled thermal cycle up to 370°C, ensuring the pigment lock-in and polymer merging.
Centerless Grinding
Sintered colored preforms are ground and polished on specialty machinery to achieve tight roundness and surface quality.
QC & Color Match
In addition to standard sphericity checks, each batch is visually checked under calibrated light sources for color consistency.
Material selection notes
Engineered from high-purity PTFE fluoropolymer, this component resists virtually all industrial acids, alkalis, and aggressive organic solvents. The non-stick, self-lubricating surface minimizes drag and prevents material buildup in fluid handling systems. Compressive deformation under load is optimized through tailored filler grades based on service pressure.
How to specify your order
To configure Coloured PTFE Balls for your application, submit component dimensions, operating PV factors, and delivery port requirements. Our engineering team prepares complete technical evaluations and formal quotations within 24 hours.
Quality checks and inspection
Testing procedures for Coloured PTFE Balls include optical comparator profile inspection, hydrostatic pressure holding tests on seal components, and material hardness checks (Shore D) to verify full sintering cure.
Ordering and export documentation
Domestic Coloured PTFE Balls 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. Air and sea freight packing with desiccant and shock protection for international buyers Contact info@hemsun.com or sales@hemsun.com with your balls specification.
Export packing and lead time
Export logistics for Coloured PTFE Balls cover global delivery via air freight or ocean container through Mundra and Nhava Sheva ports. Products are packed with protective foam wrapping and moisture-barrier film inside export-grade wooden crates, accompanied by certified commercial invoices and Certificates of Origin.
Storage and handling
Handling and assembly guidelines for Coloured PTFE Balls: Components should be kept in protective polybags until final assembly. Use clean, rounded assembly mandrels when installing over shaft threads to prevent surface scratches or edge nicking.
Material comparison
Compare colored PTFE spheres against standard natural PTFE to select the appropriate option for your application.
| Characteristic | Coloured PTFE | Natural Virgin PTFE |
|---|---|---|
| Visual Identification | Excellent (high visibility colors for quick line coding) | None (standard opaque white) |
| Chemical Resistance | Nearly Identical (pigments are locked into the inert matrix) | Universal (absolute chemical resistance) |
| Purity Level | 99.5% + FDA Pigment (safe for sanitary processing) | 100% Pure Virgin Polymer |
| Sourcing & Lead Time | Made-to-order (7-12 days depending on color) | Ready stock (24-48 hours for standard sizes) |
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
Are colored PTFE pigments FDA compliant?
Yes. We compound our colored PTFE balls using sanitary pigments formulated to comply with FDA CFR 21 part 177 rules for direct food and beverage contact.
Does the color affect the chemical resistance of the ball?
When compounded correctly with virgin base resin, colored PTFE retains nearly all chemical resistance and low-friction properties of natural PTFE.
What colors are standard for coloured PTFE balls?
Our standard colors include deep blue, red, forest green, yellow, black, and natural white. Custom color matching is available for volume orders.
Do colored PTFE balls leach pigment into chemical solvents?
No. The sintering process locks the pigments molecularly into the PTFE polymer matrix, preventing bleeding or leaching in standard industrial solvents.
Can they be used in steam sterilization cycles?
Yes. The pigments are selected for thermal stability, allowing the balls to withstand autoclave sterilization cycles up to 260°C.
What is the minimum order quantity (MOQ) for custom colors?
The MOQ for custom pigment formulations varies by color and diameter. Standard colors like blue and red have highly flexible MOQs.
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