FEP Ball | Fluorinated Ethylene Propylene Ball | 5mm to 310mm | Near-PTFE Chemical Resistance
HEMSUN ENGG. INDUSTRIES manufactures FEP Balls — Fluorinated Ethylene Propylene Balls — from 5mm to 310mm diameter. FEP Balls offer near-PTFE chemical resistance across virtually all industrial acids, alkalis, and solvents, combined with optical transparency (FEP Balls are naturally clear, allowing visual inspection), greater flexibility than PTFE, and melt-processable manufacturing for improved surface finish. Used in high-purity chemical delivery valves, pharmaceutical ultra-pure fluid handling, laboratory check valves, and analytical instrument flow control systems. ISO 3290 Grade G10. Exported globally.
Applications
Semiconductor
FEP Balls in ultra-pure chemical delivery valve check balls for HF and H2SO4 in fabs
Pharmaceutical
FDA-compliant FEP Balls in sterile process valves and WFI system check valves
Laboratory
FEP Check Valve Balls in HPLC pump check valves and analytical instrument flow cells
High-purity chemical valves
FEP Balls where optical clarity allows visual valve condition inspection
Semiconductor high-purity
FEP Balls in chemical sampling valves requiring fluoropolymer purity
Food and beverage
FDA FEP Balls in transparent-bodied sanitary check valves for process monitoring
Features
Diameter
5mm to 310mm — industry-leading FEP Ball size range
Material
FEP (Fluorinated Ethylene Propylene) — premium fluoropolymer
Grade
ISO 3290 Grade G10 precision
Near-PTFE chemical resistance
all acids, alkalis, solvents
Optically transparent / clear
visual ball inspection possible
More flexible than PTFE
better conforming seat contact
Temperature range
-200°C to +200°C
FDA 21 CFR compliant
food and pharmaceutical safe
Gas Permeability
very low
Surface
non-stick, non-contaminating
Typical Use
semiconductor, pharmaceutical, and laboratory valve applications
IEC registered
export-ready quality
Technical Specifications
| Property | Value |
|---|---|
| Material | FEP (Fluorinated Ethylene Propylene) |
| Diameter Range | 5mm – 310mm |
| Grade | ISO 3290 Grade G10 |
| Temperature Range | -200°C to +200°C |
| Chemical Resistance | Near-PTFE — all acids, alkalis, solvents |
| Clarity | Optically transparent / clear |
| Specific Gravity | 2.12 – 2.17 g/cm³ |
| FDA Compliance | Yes — FDA 21 CFR compliant |
| Gas Permeability | Very low |
| Export Markets | UAE, Germany, USA, Japan, Singapore, Brazil, Turkey, Middle East |
Manufacturing Process
FEP Balls are CNC-machined from extruded FEP rod stock. FEP's melt-processable nature produces denser, smoother surface than compression-molded PTFE — beneficial for high-purity and low-extractable applications.
Compliance & Standards
IEC registered. FDA 21 CFR compliant. ISO 3290 Grade G10. Optically clear — allows visual inspection of ball. Near-PTFE chemical resistance. Regular export to UAE, Germany, USA, Japan, Singapore, Brazil, Turkey, and Middle East.
Frequently Asked Questions
Why are FEP Balls transparent while PTFE Balls are white and opaque?
FEP is melt-processable — it is processed through extrusion like standard thermoplastics, producing a dense, optically clear material. PTFE cannot be melt-processed — it is compression-molded, producing a white opaque structure. FEP's transparency allows visual inspection of the ball condition in clear-bodied valves and flow control assemblies.
What is the largest FEP Ball you manufacture?
We manufacture FEP Balls up to 310mm diameter — one of the widest size ranges for FEP Balls available globally.
Is FEP Ball chemical resistance the same as PTFE Ball?
FEP Balls offer near-PTFE chemical resistance — resistant to virtually all industrial chemicals including strong acids, alkalis, and solvents. The main difference: FEP is limited to +200°C vs PTFE's +260°C, and FEP has slightly lower chemical resistance to certain high-concentration fluorinated media.
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