HEMSUN ENGG. INDUSTRIES supplies PTFE balls to Rajkot’s engineering cluster — Metoda GIDC, Shapar-Veraval, Aji GIDC and Bhaktinagar — direct from our Dahegam factory. We manufacture solid PTFE spheres from 5 mm to 310 mm to drawing, which suits Rajkot buyers who are building valves and pumps rather than maintaining them.
Why buyers in Rajkot, Gujarat source PTFE balls from HEMSUN
Rajkot is a manufacturing city rather than a process city, and that changes what buyers need. Here PTFE balls go into products being assembled — submersible and monoblock pumps, ball check valves, diesel engine ancillaries and fittings — so the requirement is repeatable OEM quantities against a fixed drawing, with consistent diameter and roundness batch after batch. That is a different conversation from the one-off maintenance spares a chemical plant buys, and it is why die control and in-house grinding matter to Rajkot customers.
Industrial clusters
- Metoda GIDC
- Shapar-Veraval industrial belt
- Aji GIDC
- Bhaktinagar industrial area
- Gondal Road industrial belt
- Kuvadva GIDC
Industries that specify PTFE balls
Pump manufacturing
Check spheres built into submersible, monoblock and reciprocating pump assemblies.
Valve and fittings manufacturing
Soft-seat ball elements for ball check and non-return valve production.
Diesel engines and ancillaries
PTFE spheres in fuel and lubrication non-return circuits.
Castings and machine tools
Low-friction spheres in hydraulic and pneumatic sub-assemblies.
Bearing and seal assembly
Precision-ground PTFE balls where consistent roundness is a build requirement.
Supply and logistics
HEMSUN manufactures in Dahegam, Gujarat and dispatches to Rajkot, Gujarat with export-ready documentation.
| Fact | Detail |
|---|---|
| Distance from our factory | Approximately 220 km by road from Dahegam |
| OEM supply | Repeat batch production against fixed drawings and release schedules |
| Tolerance control | In-house centerless grinding and 100% dimensional audit before dispatch |
| Documentation | GST invoice, e-way bill, dimensional report on request |
Typical applications
- Check balls in submersible and monoblock pump assemblies
- Ball check valve soft-seat elements
- Fuel and lubrication non-return spheres
- Hydraulic and pneumatic circuit check balls
- Float spheres in level control assemblies
Related product pages: Virgin PTFE Ball, PTFE Hollow Ball, PTFE ball sizes, and request a quote.
Technical specifications, testing and engineering data
HEMSUN ENGG. INDUSTRIES manufactures and engineers high-precision solutions for ptfe balls manufacturer in rajkot at our Dahegam, Gujarat facility. Operating since 1994, our manufacturing processes combine modern CNC machining centers, precision hydraulic compression presses, and continuous CMM inspection.
Comprehensive Material & Mechanical Property Matrix
| Engineering Property | Virgin PTFE Standard | 25% Glass-Filled PTFE | 33% Carbon-Filled PTFE | 60% Bronze-Filled PTFE | Test Standard |
|---|---|---|---|---|---|
| Specific Gravity | 2.14 – 2.18 g/cm³ | 2.22 – 2.26 g/cm³ | 2.05 – 2.15 g/cm³ | 3.80 – 4.00 g/cm³ | ASTM D792 |
| Tensile Strength | 20 – 35 MPa | 14 – 22 MPa | 12 – 18 MPa | 15 – 24 MPa | ASTM D4894 |
| Elongation at Break | 250% – 450% | 150% – 250% | 80% – 160% | 100% – 200% | ASTM D4894 |
| Compressive Strength (1% strain) | 4.0 – 5.5 MPa | 7.5 – 9.0 MPa | 8.0 – 10.5 MPa | 12.0 – 15.0 MPa | ASTM D695 |
| Deformation Under Load (14 MPa, 24h) | 12% – 15% | 4% – 6% | 3.5% – 5% | 2.5% – 4% | ASTM D621 |
| Shore D Hardness | 50 – 55 Shore D | 58 – 64 Shore D | 60 – 66 Shore D | 65 – 72 Shore D | ASTM D2240 |
| Dynamic Friction Coeff. (vs Steel) | 0.05 – 0.08 | 0.10 – 0.14 | 0.08 – 0.12 | 0.12 – 0.16 | ASTM D1894 |
| Thermal Conductivity | 0.25 W/m·K | 0.40 W/m·K | 0.55 W/m·K | 0.85 W/m·K | ASTM C177 |
Quality Assurance, Testing Protocols & Traceability
- Dimensional CMM Profilometry: Critical diameters, concentricity, and sphericity are verified on coordinate measuring machines against drawing nominals.
- Dielectric Breakdown Voltage Testing: High-voltage spark testing screens moulded parts for micro-voids, pinholes, and internal conductive inclusions before dispatch.
- Specific Gravity & Density Verification: Water displacement density checks according to ASTM D792 ensure full preform compaction and complete oven gel sintering.
- Certificate of Compliance & MTR: Every dispatch includes mill test certificates confirming raw resin lot traceability, filler content, and tensile/elongation values.
Installation, Machining & Maintenance Recommendations
- Tooling Geometry for Machining: Use polished tungsten carbide (C2 grade) or polycrystalline diamond (PCD) inserts with high positive top rake angles (15° to 25°) and sharp cutting edges to prevent material smearing.
- Feed & Speed Rates: High spindle speeds (200 to 450 m/min) combined with moderate feed rates (0.05 to 0.15 mm/rev) ensure mirror surface finishes without localized frictional heating.
- Coolant Application: Water-soluble synthetic coolants or clean air blast prevent thermal expansion during high-speed CNC turning and milling passes.