Automotive PTFE — Material Specifications, Engineering Data & OEM & ODM Supply
Automotive PTFE by HEMSUN is manufactured in Gujarat, India, delivering high-reliability performance in aggressive fluid handling and chemical environments. Formulated from premium PTFE fluoropolymer to provide low friction, high dielectric strength, and precise drawing tolerances.
Where Automotive PTFE is used
PTFE is chosen for near-universal chemical inertness, a −200°C to +260°C service band, and the lowest friction of the common engineering polymers.
Common in fuel handling, braking and transmission assemblies, and on the production lines that build them.
Key properties
In-house Automotive PTFE production
moulding and CNC under one roof
Drawing, CAD (STEP/IGES/DXF), or sample-based reverse engineering
PTFE grade options matched to chemical and thermal duty
Dimensional inspection with reports on request
IEC-registered exporter
worldwide packing and docs
Flexible MOQ
prototypes, pilot lots, recurring OEM supply
Specifications
| Property | Value |
|---|---|
| Component Type & Grade | Automotive PTFE (Specification Code HES-219) |
| 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 |
Manufacturing process
Production of Automotive PTFE combines cold isostatic/uniaxial compaction of PTFE fluoropolymer powder with multi-stage thermal free-sintering. Compaction loads are held under precise electronic dwell timing to bleed out microscopic air pockets. Sintered blanks are then transferred to climate-controlled CNC turning and milling centers to machine critical drawing features.
Material selection notes
Featuring FDA-compliant virgin PTFE fluoropolymer or specialized filled compounds, Automotive PTFE provides reliable sealing and low-friction motion under continuous operating temperatures up to +260°C. Filler additions enhance mechanical rigidity, wear resistance, and thermal conductivity for heavy mechanical loads.
How to specify your order
Selecting Automotive PTFE for OEM manufacturing: Provide part 2D drawings, resin filler preference, and target monthly consumption. We calculate tooling requirements, unit pricing, and dispatch timelines for domestic and export delivery.
Quality checks and inspection
Quality assurance for Automotive PTFE includes 100% optical dimensional inspection, digital micrometer verification, CMM coordinate layout testing, and water displacement specific gravity checks according to ASTM D792. High-voltage spark testing up to 80 kV/mm verifies absence of internal pinholes and voids.
Ordering and export documentation
Domestic Automotive PTFE 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 PTFE components specification. As an integrated automotive Tier supplier partner, HEMSUN designs and manufactures powder metallurgy (PM) compaction presses, multi-cavity brake pad hot presses, and CNC workholding fixtures in-house. As an integrated automotive Tier supplier partner, HEMSUN designs and manufactures powder metallurgy (PM) compaction presses, multi-cavity brake pad hot presses, and CNC workholding fixtures in-house.
Export packing and lead time
Export customers receive complete logistics assistance for Automotive PTFE, including FOB/CIF shipping quotes, express air courier delivery for prototype samples, and secure sea-freight container packing with full batch traceability.
Storage and handling
Storage and operating notes for Automotive PTFE: Keep parts in sealed packaging at ambient room temperature. During equipment overhaul, inspect sealing lips for particulate embedding and replace components showing mechanical wear.
Compliance & Standards
IEC registered. Material certificates and dimensional reports available on request. Export documentation for commercial and project shipments worldwide.
Frequently Asked Questions
What automotive applications use PTFE?
PTFE bushings, seals, spacers, and wear components appear in fuel systems, braking assemblies, sensors, and powertrain hardware where low friction and chemical resistance extend service life.
Does HEMSUN support automotive OEM programs?
Yes. We supply recurring batch production, drawing-based prototypes, and export packaging for Tier suppliers and aftermarket programs.
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