Teflon™ Equivalent PTFE Balls — Material Specifications, Engineering Data & OEM Supply
Teflon™ Equivalent PTFE Balls is manufactured in Gujarat by HEMSUN ENGG. INDUSTRIES, providing tight dimensional accuracy and long service life in precision valve balls. Features premium PTFE fluoropolymer compounding, void-free sintering, and precision CMM inspection.
Where Teflon 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.
PTFE suits check and valve balls because it seats against metal without galling and needs no lubricant that could contaminate the line.
Key properties
Chemical Resistance
Opaque white spheres inert to aggressive solvents, sulfuric acid, nitric acid, and chlorine.
Low Torque Operation
Low coefficient of friction reduces the torque required to open and close ball valves.
Cryogenic & High Temp
Retains structural sealing integrity from -200°C up to +260°C.
FDA-Compliant Resin
Made from virgin PTFE resin complying with FDA 21 CFR 177.1550 for food-contact use.
Void-Free Density
Solid billets compacted at 20-25 MPa to eliminate internal bubbles or porosity.
Zero Moisture Absorption
Hydrophobic material remains dimensionally stable in water and steam.
Electrical Insulation
High dielectric strength prevents electrical tracking in instruments.
Precision Finish
Smooth ground finish ensures a tight seal against soft valve seats.
Specifications
| Property | Value |
|---|---|
| Component Type & Grade | Teflon™ Equivalent PTFE Balls (Specification Code HES-971) |
| 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
We supply Teflon/PTFE balls in metric and fractional inch dimensions. Below are standard stock sizes available for direct dispatch.
| Size | Metric | Inch | Tolerance |
|---|---|---|---|
| 1/4″ | 6.00 mm | 0.250″ | ±0.05 mm |
| 3/8″ | 9.52 mm | 0.375″ | ±0.05 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 |
| 4″ | 100.00 mm | 4.000″ | ±0.25 mm |
How this part is made
Resin Sourcing
High-grade PTFE fluoropolymer powders matching branded Teflon specifications are selected.
In-House Pressing
Powders are compacted under 20-25 MPa in custom-machined steel dies to produce solid green billets.
Thermal Fusion
Billets are sintered in programmable ovens at 360°C - 380°C to fuse the fluoropolymer particles.
Centerless Grinding
Sintered rounds are turned on lathes and ground to achieve spherical roundness and smooth finish.
Inspection
Dial gauges and micro-meters verify tolerances, ensuring the balls meet B2B valve standards.
Material selection notes
The PTFE fluoropolymer material utilized in Teflon™ Equivalent PTFE Balls exhibits exceptional dielectric insulation (up to 80 kV/mm) and zero moisture absorption (<0.01%). It withstands thermal cycling between cryogenic temperatures and +260°C without embrittlement or dimensional degradation in demanding industrial environments.
How to specify your order
When requesting a proposal for Teflon™ Equivalent PTFE Balls, please provide 2D/3D component drawings with dimensional tolerances, material resin grade (virgin or specific filler ratio), operating pressure/temperature conditions, and required batch quantities. Our engineering team reviews manufacturability and returns quotes within 24 hours.
Quality checks and inspection
Each shipment of Teflon™ Equivalent PTFE Balls is verified through comprehensive QA benchmarks: CMM dimensional layout, density gradient analysis, high-voltage insulation breakdown testing, and certified inspection reports.
Ordering and export documentation
Domestic Teflon™ Equivalent 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. Material certificates and dimensional reports attached for qualified pharmaceutical and OEM shipments Contact info@hemsun.com or sales@hemsun.com with your balls specification.
Export packing and lead time
We provide full export support for Teflon™ Equivalent PTFE Balls orders worldwide. International documentation includes Certificate of Origin, packing lists, material safety data sheets, and custom export crating designed to withstand long-distance maritime transit.
Storage and handling
Storage and operating notes for Teflon™ Equivalent PTFE Balls: Keep parts in sealed packaging at ambient room temperature. During equipment overhaul, inspect sealing lips for particulate embedding and replace components showing mechanical wear.
Material comparison
Compare Teflon/PTFE properties against common alternative engineering plastics to make an informed selection.
| Characteristic | Teflon (PTFE) | Alternative Engineering Plastics |
|---|---|---|
| Temperature Range | Extreme (-200°C to +260°C) | Moderate (-40°C to +120°C for Delrin) |
| Chemical Resistance | Universal (Excellent) | Selective (attacks by concentrated acids on Nylon/Delrin) |
| Stiffness & Rigidity | Low (soft, subject to creep under high load) | High (Delrin resists deformation under load) |
| Water Absorption | Zero (Hydrophobic) | Low to Moderate (Nylon swells in high humidity) |
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 Teflon balls the same as PTFE balls?
Yes. Teflon is the brand name registered by Chemours/DuPont for PTFE (polytetrafluoroethylene). Both terms refer to the same high-performance fluoropolymer.
What sizes of Teflon/PTFE balls do you manufacture?
We manufacture solid PTFE spheres from 5 mm to 310 mm in metric and fractional inch dimensions.
Do you supply genuine Teflon branded material?
We manufacture balls using premium PTFE resins (like Inoflon or Flonio) that match or exceed branded Teflon specifications. Branded Chemours Teflon resin can be utilized upon customer request for volume programs.
Are these balls suitable for dry running bearings?
Yes. Due to their self-lubricating property and low friction coefficient, they are excellent for light-load, dry-running bearing applications.
What is the surface finish of your Teflon/PTFE balls?
Our standard balls are centerless ground and polished to a smooth, matte-to-semi-gloss finish, ensuring a clean, low-friction seal.
Do you export Teflon balls to international buyers?
Yes. We export our precision PTFE balls worldwide, utilizing sea-worthy packaging and reliable international air freight.
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