PTFE Ball Sizes — Material Specifications, Engineering Data & OEM Supply
Produced at our Gujarat manufacturing works, PTFE Ball Sizes 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 PTFE Ball Sizes 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.
Supplied to drawing across the published range — Diameter
5 mm to 310 mm — among the largest PTFE balls available globally — with dimensional and material reports on request.
Key properties
Diameter
5 mm to 310 mm — among the largest PTFE balls available globally
Catalog
metric millimetre sizes and fractional inch equivalents
Tolerance
±0.05 mm on small diameters, opening with size; tighter bands on request
Custom sizes
in-house toolroom cuts dies for non-catalog diameters
Hollow balls
quoted separately by OD and wall thickness
Filled grades
glass, carbon, bronze, graphite and MoS2 available in custom sizes
Specifications
| Property | Value |
|---|---|
| Component Type & Grade | PTFE Ball Sizes (Specification Code HES-652) |
| 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
Manufactured solid PTFE ball diameters with metric millimetre values, fractional inch equivalents, and machining tolerance bands. Hollow PTFE balls are quoted separately.
| Size | Metric | Inch | Tolerance |
|---|---|---|---|
| 5 mm | 5 mm | 0.197″ | ±0.05 mm |
| 6 mm | 6 mm | 0.236″ | ±0.05 mm |
| 1/4″ | 6.35 mm | 1/4″ | ±0.05 mm |
| 7 mm | 7 mm | 0.276″ | ±0.05 mm |
| 5/16″ | 7.9 mm | 5/16″ | ±0.05 mm |
| 8 mm | 8 mm | 0.315″ | ±0.05 mm |
| 3/8″ | 9.52 mm | 3/8″ | ±0.05 mm |
| 10 mm | 10 mm | 0.394″ | ±0.05 mm |
| 7/16″ | 11.11 mm | 7/16″ | ±0.05 mm |
| 12 mm | 12 mm | 0.472″ | ±0.05 mm |
| 1/2″ | 12.7 mm | 1/2″ | ±0.05 mm |
| 15 mm | 15 mm | 0.591″ | ±0.05 mm |
| 16 mm | 16 mm | 0.63″ | ±0.05 mm |
| 18 mm | 18 mm | 0.709″ | ±0.05 mm |
| 19 mm | 19 mm | 0.748″ | ±0.05 mm |
| 20 mm | 20 mm | 0.787″ | ±0.05 mm |
| 21 mm | 21 mm | 0.827″ | ±0.05 mm |
| 22 mm | 22 mm | 0.866″ | ±0.05 mm |
| 23 mm | 23 mm | 0.906″ | ±0.05 mm |
| 25 mm | 25 mm | 0.984″ | ±0.05 mm |
| 1″ | 25.4 mm | 1″ | ±0.05 mm |
| 1-1/8″ | 28.57 mm | 1-1/8″ | ±0.15 mm |
| 30 mm | 30 mm | 1.181″ | ±0.15 mm |
| 32 mm | 32 mm | 1.26″ | ±0.15 mm |
| 35 mm | 35 mm | 1.378″ | ±0.15 mm |
| 36 mm | 36 mm | 1.417″ | ±0.15 mm |
| 38 mm | 38 mm | 1.496″ | ±0.15 mm |
| 40 mm | 40 mm | 1.575″ | ±0.15 mm |
| 1-5/8″ | 41.27 mm | 1-5/8″ | ±0.15 mm |
| 43 mm | 43 mm | 1.693″ | ±0.15 mm |
| 1-3/4″ | 44.45 mm | 1-3/4″ | ±0.15 mm |
| 46 mm | 46 mm | 1.811″ | ±0.15 mm |
| 1-7/8″ | 47.62 mm | 1-7/8″ | ±0.15 mm |
| 50 mm | 50 mm | 1.969″ | ±0.15 mm |
| 2″ | 50.8 mm | 2″ | ±0.15 mm |
| 2-3/16″ | 55.57 mm | 2-3/16″ | ±0.15 mm |
| 56 mm | 56 mm | 2.205″ | ±0.15 mm |
| 2-1/4″ | 57.15 mm | 2-1/4″ | ±0.15 mm |
| 60 mm | 60 mm | 2.362″ | ±0.15 mm |
| 63 mm | 63 mm | 2.48″ | ±0.15 mm |
| 2-1/2″ | 63.5 mm | 2-1/2″ | ±0.15 mm |
| 64 mm | 64 mm | 2.52″ | ±0.15 mm |
| 65 mm | 65 mm | 2.559″ | ±0.15 mm |
| 68 mm | 68 mm | 2.677″ | ±0.15 mm |
| 2-3/4″ | 69.85 mm | 2-3/4″ | ±0.15 mm |
| 70 mm | 70 mm | 2.756″ | ±0.15 mm |
| 72 mm | 72 mm | 2.835″ | ±0.15 mm |
| 73 mm | 73 mm | 2.874″ | ±0.15 mm |
| 75 mm | 75 mm | 2.953″ | ±0.15 mm |
| 3″ | 76.2 mm | 3″ | ±0.15 mm |
| 80 mm | 80 mm | 3.15″ | ±0.25 mm |
| 3-1/4″ | 82.55 mm | 3-1/4″ | ±0.25 mm |
| 85 mm | 85 mm | 3.346″ | ±0.25 mm |
| 90 mm | 90 mm | 3.543″ | ±0.25 mm |
| 92 mm | 92 mm | 3.622″ | ±0.25 mm |
| 3-3/4″ | 95.25 mm | 3-3/4″ | ±0.25 mm |
| 3-7/8″ | 98.42 mm | 3-7/8″ | ±0.25 mm |
| 100 mm | 100 mm | 3.937″ | ±0.25 mm |
| 4″ | 101.6 mm | 4″ | ±0.25 mm |
| 108 mm | 108 mm | 4.252″ | ±0.25 mm |
| 112 mm | 112 mm | 4.409″ | ±0.25 mm |
| 115 mm | 115 mm | 4.528″ | ±0.25 mm |
| 120 mm | 120 mm | 4.724″ | ±0.25 mm |
| 125 mm | 125 mm | 4.921″ | ±0.25 mm |
| 5″ | 127 mm | 5″ | ±0.25 mm |
| 130 mm | 130 mm | 5.118″ | ±0.25 mm |
| 5-3/16″ | 131.77 mm | 5-3/16″ | ±0.25 mm |
| 5-1/4″ | 133.35 mm | 5-1/4″ | ±0.25 mm |
| 146 mm | 146 mm | 5.748″ | ±0.25 mm |
| 150 mm | 150 mm | 5.906″ | ±0.25 mm |
| 152 mm | 152 mm | 5.984″ | ±0.50 mm |
| 160 mm | 160 mm | 6.299″ | ±0.50 mm |
| 168 mm | 168 mm | 6.614″ | ±0.50 mm |
| 170 mm | 170 mm | 6.693″ | ±0.50 mm |
| 172 mm | 172 mm | 6.772″ | ±0.50 mm |
| 7″ | 177.8 mm | 7″ | ±0.50 mm |
| 180 mm | 180 mm | 7.087″ | ±0.50 mm |
| 7-11/16″ | 195.27 mm | 7-11/16″ | ±0.50 mm |
| 224 mm | 224 mm | 8.819″ | ±0.50 mm |
| 9-13/16″ | 248.92 mm | 9-13/16″ | ±0.50 mm |
| 310 mm | 310 mm | 12.205″ | ±0.50 mm |
Manufacturing process
Our manufacturing route for PTFE Ball Sizes begins with precision die compaction of granular PTFE fluoropolymer resin under sustained tonnage. Following preform ejection, parts enter multi-zone circulating air sintering ovens where temperatures dwell at 365°C–375°C to achieve full gel coalescence. Components are cooled at controlled rates to optimize crystalline fraction and mechanical stability.
Material selection notes
Designed around the molecular stability of PTFE fluoropolymer, PTFE Ball Sizes offers continuous service in harsh environments with zero chemical attack from oxidizing media. Custom compounding with carbon, bronze, or glass fillers enhances load-bearing capability under dynamic cycling.
How to specify your order
RFQ requirements for PTFE Ball Sizes: Please state critical bore and surface finish tolerances, operating fluid media, and required quantity. Our engineering team verifies production feasibility and issues comprehensive commercial proposals promptly.
Quality checks and inspection
Our in-house quality inspection team tests PTFE Ball Sizes across multiple critical parameters: raw resin lot traceability, preform green density, sintered tensile strength, and finished dimensional compliance using calibrated digital gauges.
Ordering and export documentation
Domestic PTFE Ball Sizes 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
We export PTFE Ball Sizes to industrial clients across 30+ countries. Shipments include full customs compliance paperwork, Certificate of Origin, and robust export crating engineered for safe international freight.
Storage and handling
Handling and assembly guidelines for PTFE Ball Sizes: 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.
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 is the largest PTFE ball size you can manufacture?
We manufacture solid PTFE balls up to 310 mm in diameter. These extra-large spheres are compression molded as solid billets and custom-turned and ground to print.
What is the smallest PTFE ball size available?
Our standard smallest catalog diameter is 5 mm. Fractional inch sizes from 1/4 inch (6.35 mm) upward are also manufactured in-house.
Can you manufacture custom metric diameters not listed in your chart?
Yes. We cut custom steel dies in our in-house toolroom, enabling us to mold and turn custom metric diameters to your drawing specifications.
Do you manufacture hollow PTFE balls?
Yes. Hollow PTFE balls are built from two virgin hemispheres joined by thermal fusion and chemical welding. Sizes are quoted per outer diameter and wall thickness.
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