Food Grade PTFE Seal — Material Specifications, Engineering Data & OEM Supply
Custom-engineered by HEMSUN ENGG. INDUSTRIES in Dahegam, Gujarat, Food Grade PTFE Seal provides exceptional chemical and thermal resilience for dynamic seal rings. Produced from certified PTFE fluoropolymer with strict density control and diamond-tooled CNC finish machining for global industrial processors.
Where Food Grade PTFE Seal is used
Dynamic or static sealing element retaining pressure at a moving or fixed interface.
Specified where FDA 21 CFR 177.1550 listed resin is required for direct food, dairy and beverage contact, with cleanability and no taste transfer.
Common in dairy, brewing, edible-oil and bottling lines, and on filling equipment that is washed down between batches.
Key properties
In-house Food Grade PTFE Seal 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 | Food Grade PTFE Seal (Specification Code HES-782) |
| 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
Food Grade PTFE Seal is manufactured at our Dahegam facility using high-pressure compression moulding followed by computer-controlled oven sintering up to 370°C and precision CNC finishing. Raw PTFE fluoropolymer resin is cold-pressed at 300 to 450 kg/cm² (3,000 to 4,500 psi) into rigid green preforms. Sintering under programmed heating ramps enables complete particle coalescence, eliminating internal porosity and yielding high tensile and dielectric strength.
Material selection notes
The chemical resilience of PTFE fluoropolymer ensures Food Grade PTFE Seal remains completely impervious to corrosive chemicals, steam, and industrial fuels. Its low frictional properties reduce torque requirements in valve assemblies and prevent galling against mating metal faces.
How to specify your order
Sizing and ordering Food Grade PTFE Seal: Share drawing files (STEP/PDF), annual volume projections, and any compliance requirements (FDA, USP Class VI). Our technical department confirms tooling costs, sample schedules, and volume production lead times.
Quality checks and inspection
Every batch of Food Grade PTFE Seal undergoes stringent quality checks at our Dahegam plant: laser micrometer diameter scanning, surface roughness profilometry (Ra ≤ 0.2 µm), and tensile/elongation testing per ASTM D4894 to ensure complete material coalescence.
Ordering and export documentation
Domestic Food Grade PTFE Seal 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 seals specification.
Export packing and lead time
HEMSUN ENGG. INDUSTRIES supplies Food Grade PTFE Seal to international valve and pump manufacturers globally. Export orders include comprehensive quality certificates, packing lists, and seaworthy timber boxing compliant with ISPM 15 standards.
Storage and handling
Assembly recommendations for Food Grade PTFE Seal: Use non-metallic insertion tools to press components into tight bores. Store stock in climate-controlled shelving away from direct heat sources.
Compliance & Standards
HEMSUN is a DGFT IEC registered exporter (Government of India). Moulded from FDA 21 CFR 177.1550 listed resin; the material certificate traces the resin lot behind each batch, and sintered density is checked per ASTM D792. Export paperwork — commercial invoice, packing list and certificate of origin — accompanies international despatch.
Frequently Asked Questions
What Food Grade PTFE Seal options does HEMSUN manufacture?
Custom-engineered by HEMSUN ENGG. INDUSTRIES in Dahegam, Gujarat, Food Grade PTFE Seal provides exceptional chemical and thermal resilience for dynamic seal rings. Produced from certified PTFE fluoropolymer with strict…
Can you supply Food Grade PTFE Seal for OEM and export orders?
Yes. We support prototype lots, recurring OEM programmes, and export packing with material certificates and dimensional inspection reports on request. Typical RFQ response is within one business day when drawings are complete.
How do I request a quote for Food Grade PTFE Seal?
Send material grade, dimensions or drawing, quantity, application media, and operating temperature/pressure via https://hemsun.com/contact. Our engineering team confirms manufacturability, lead time, and pricing.
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