From moulding and sintering to dies, CNC machining, and fixtures — one HEMSUN team
HEMSUN ENGG. INDUSTRIES develops PTFE applications end-to-end for OEMs, process plants, and equipment builders worldwide. Start with a drawing, sample, or duty problem — chemical media, temperature, pressure, wear, or sealing — and we engineer the part route in-house: powder selection, compression moulding, controlled sintering, custom dies, CNC finishing, and production fixtures when the machining cell needs them. Presses and tooling for PTFE lines are also built at our Dahegam, Gujarat works, so buyers who need parts and the machine cell can work with one manufacturer. That is the HEMSUN difference: PTFE products as a complete solution from a single source, not a chain of traders.
Applications
New PTFE part numbers where moulding vs machining vs hybrid route is still open
Valve, pump, and sealing components needing chemical and thermal duty matching
Scale-up from prototype samples to recurring OEM lots with matched tooling
Buyers who want parts, dies, fixtures, and optionally PTFE press cells from one factory
Export programmes needing IEC-ready packing, CoA, and dimensional reports
Features
Application review from drawing, CAD, or failed sample — grade and process recommended together
In-house compression moulding and programmable sintering for green density and dimensional stability
Custom dies and punches designed with the part and the press in mind
CNC machining (VMC + lathes) for finished geometry, tolerances, and secondary features
Workholding fixtures engineered for repeatable PTFE and polymer machining
Prototype → pilot → OEM supply with material certificates and export documentation
Technical Specifications
| Property | Value |
|---|---|
| Scope | PTFE application development — parts, dies, fixtures, optional press cells |
| Process chain | Moulding → sintering → die tooling → CNC → fixtures → OEM supply |
| Materials | Virgin PTFE, filled PTFE, food-grade / FDA-suitable grades to enquiry |
| Inputs | Drawing, STEP/IGES/DXF, size list, or physical sample |
| Origin | Dahegam, Gandhinagar, Gujarat, India |
| Support | Engineering review, prototypes, recurring OEM, export docs |
Manufacturing Process
Application Review
We study media, temperature, load, tolerance, and annual volume from your drawing, CAD, or sample — then propose virgin/filled/FDA routes and moulding vs CNC vs hybrid.
Compression Moulding
PTFE powder is filled into in-house dies and compacted on HEMSUN presses sized to the preform and cavity layout.
Controlled Sintering
Green preforms follow a programmed thermal cycle so polymer fusion and dimensional stability match the finished duty.
Dies & Tooling
Punches, dies, and multi-cavity sets are cut for your OD/ID, length, and ejection needs — usable on HEMSUN cells or agreed press interfaces.
CNC Machining
Sintered blanks are finished on in-house VMC and CNC lathes for critical dimensions, seats, grooves, and secondary features.
Fixtures
When production machining needs rigid datums and fast load/unload, we design and build workholding matched to your machine envelope.
Inspection & Supply
Dimensional checks, material certificates on request, then prototype or OEM packing for domestic and worldwide shipment.
Compliance & Standards
IEC registered. Material certificates, dimensional inspection reports, and export documentation (commercial invoice, packing list, certificate of origin) available for qualified orders worldwide.
Frequently Asked Questions
What does PTFE application development include at HEMSUN?
HEMSUN covers the full route in-house — application review, compression moulding, sintering, custom dies, CNC machining, and production fixtures when needed. Buyers can also scope PTFE press cells from the same factory for a true single-source programme.
When should I use application development instead of ordering a finished part only?
Use it when the process route is still open (mould vs machine vs hybrid), when you need matched dies or fixtures, or when you want prototype-to-OEM scale-up under one quality system rather than splitting work across multiple vendors.
What should I send for an RFQ?
Share a drawing or CAD (STEP/IGES/DXF), material preference if known, media and temperature, critical tolerances, quantity, and destination. A failed sample also helps us reverse-engineer a better grade and process.
Do you support export OEM programmes?
Yes. IEC-registered export documentation, material certificates, and dimensional reports are available for qualified orders to buyers worldwide.