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Gansu Juxiang Fluoroplastics Technology Co.,Ltd. molds PTFE sheet from suspension-grade polytetrafluoroethylene resin at our Yumen, Gansu production base, with a second base in Zhejiang supporting scheduling and supply. The sheet is compression-molded and sintered into a solid, non-porous blank that becomes gaskets, seals, bearing sliders, insulation barriers and machined components. We supply it as cut-to-size plate or as stock for our own machining lines, in thicknesses up to 70 mm and square formats up to 2000 × 2000 mm. As a PTFE Molded Sheet manufacturer, we work from the working conditions of the part rather than from a stock list alone.
Molded Sheet Range and Size Envelope
Molded sheet is produced in square formats from 150 mm up to 2000 mm, with the thickest sections available on the larger press formats. Thickness tolerance is expressed as a percentage of nominal thickness, so a 60 mm plate carries a wider absolute band than a 6 mm plate; we confirm the practical band for your nominal size when the order is configured.
| Sheet format (mm × mm) | Maximum thickness (mm) | Thickness tolerance |
|---|---|---|
| 150 × 150 | 70 | 0~10% of nominal |
| 250 × 250 | 70 | 0~10% of nominal |
| 300 × 300 | 70 | 0~10% of nominal |
| 450 × 450 | 70 | 0~10% of nominal |
| 600 × 600 | 70 | 0~10% of nominal |
| 800 × 800 | 70 | 0~10% of nominal |
| 1000 × 1000 | 100 | 0~10% of nominal |
| 1200 × 1200 | 100 | 0~10% of nominal |
| 1500 × 1500 | 70 | 0~10% of nominal |
| 2000 × 2000 | 70 | 0~10% of nominal |
Sheet can be delivered as full-format plate, sawn or waterjet-cut to a drawing outline, or planed to a finished thickness where a tighter machining allowance is needed downstream.
Property Baseline and Application Fit
Molded PTFE sheet holds its mechanical and electrical values across a service range of −180 °C to +260 °C, which is why the same material serves sealing, low-friction and insulation duties in one plant. The values below define the material we mold to and form the reference for the inspection documentation issued with each lot.
| Property | Unit | Value |
|---|---|---|
| Apparent density | g/cm³ | 2.10–2.30 |
| Tensile strength (minimum) | MPa | ≥15.0 |
| Elongation at break (minimum) | % | ≥150 |
| Dielectric strength (minimum) | kV/mm | ≥10 |
| Service temperature | °C | −180 to +260 |
- Corrosion-resistant sealing: chemical pipelines, storage tank mouths, pump and valve bodies, flange joints handling acids, alkalis and solvents.
- Bearing and slider stock: low coefficient of friction suits guide pads, slide plates and wear surfaces running without external lubrication.
- Electrical insulation: dielectric strength above 10 kV/mm supports insulating plates, spacers and barriers in electrical and electronic assemblies.
- Machining blank: dimensionally stable plate for turning, milling and punching into rings, bushes, seats and custom profiles.
Where Molded Sheet Fits in the Juxiang Range
Molded sheet is the base grade in a wider fluoroplastic family. Where a project needs higher compressive strength, lower creep or a single large sealing geometry, we move the specification to a neighbouring product rather than force virgin sheet into the duty.
| Material form | What it changes | Where we apply it |
|---|---|---|
| PTFE Molded Sheet (suspension resin) | Baseline chemical resistance, low friction, dielectric strength above 10 kV/mm | Sealing blanks, insulation plate, slider and wear stock, general machined parts |
| Modified PTFE Sheet | Modified resin with finer particle structure, giving lower creep and better weldability than standard virgin PTFE | Lined equipment, welded seals, gaskets under sustained bolt load |
| Filled PTFE Product | Glass, carbon, graphite or bronze fillers raise compressive strength and wear resistance | Piston rings, bearing sliders, wear pads under load and at speed |
| Large integrated molded PTFE sealing frame and gasket | Molded as one continuous frame instead of being cut from flat plate | Tank mouths, large flanges and non-circular sealing geometries |
Rod, tube, film, tape and finished seal families are produced alongside the sheet, so a single project can be quoted across several forms with consistent resin sourcing.
From Plate to Finished Component
Most molded sheet leaves us as a machined part. We cut gasket outlines, turn sealing rings and valve seats, mill slide plates and drill insulation panels to the customer drawing, holding flatness on large thin sections by stress-relieving the blank before final machining. Where the part is a simple gasket, we can supply the sheet cut to the flange profile with bolt holes positioned from your dimensional data.
- Drawing-based machining of rings, bushes, seats, spacers and wear plates
- Sawing and waterjet cutting of large-format plate to outline
- Planed or machined thickness where the as-molded tolerance is too wide
- Edge finishing and deburring for sealing faces and handling safety
Quality Control and Acceptance
Density, tensile strength, elongation at break and dielectric strength are the four values we track on molded sheet, because together they reveal under-sintering, contamination and voids that a dimensional check alone would miss. Dimensional inspection covers format, thickness and, for machined parts, the drawing callouts agreed at order stage.
- Resin batch and lot identification recorded at molding
- Property testing against the tabulated baseline before release
- Dimensional inspection of plate and machined profiles
- Documentation and handling guidance issued with the delivery
Acceptance criteria, sampling and any third-party inspection arrangement are fixed in the order documents so that the incoming inspection at your plant matches what we release.
Information We Use to Configure Your Solution
A quotation for molded sheet is only as precise as the duty it has to survive. We align requirements one-to-one at the start of a project and use the following inputs to fix grade, format, tolerance and machining route.
- Part and function: gasket, slider, insulator, machined component, or plate for your own machining
- Dimensions: finished outline, nominal thickness and any drawing revision
- Service conditions: medium handled, operating temperature within the −180 to +260 °C range, pressure and bolt load
- Mechanical duty: static sealing, sliding contact, load and speed for bearing applications
- Electrical requirement: voltage class and insulation thickness where dielectric performance matters
- Quantity and delivery pattern: single lot, scheduled releases or stock programme
- Documentation and packing: inspection records, marking, protection for machined faces, export packing
Packaging, Delivery and Technical Support
Plate is packed with interleaved protection and edge support to keep machined faces flat in transit, and machined parts are packed separately from bulk sheet. Production is scheduled across the Gansu and Zhejiang bases so that volume orders and repeat releases stay on plan. Inquiries reach our technical and sales team and are answered within 12 working hours, with material selection, mold and process questions handled by the same contact through production and after delivery.
Frequently Asked Questions
What is the largest PTFE molded sheet you can produce?
Square formats run from 150 × 150 mm up to 2000 × 2000 mm. Thickness reaches 70 mm on most formats and 100 mm on the 1000 × 1000 mm and 1200 × 1200 mm sizes, with thickness tolerance held to 0~10% of nominal.
How does molded sheet differ from skived sheet?
Molded sheet is compression-molded and sintered from suspension resin, giving a solid blank with consistent density through the section. Skived sheet is peeled from a molded billet, which suits thin gauges; for thick sections and machined load-bearing parts, molded plate is the more direct route.
Can you machine finished parts from the same sheet?
Yes. We cut, turn, mill and drill to drawing, including gasket profiles, sealing rings, valve seats, slide plates and insulation panels. Stress relief before final machining keeps large thin parts flat.
What do you need to quote a molded sheet order?
Send the part drawing or outline, nominal thickness, quantity, the medium and operating temperature, and whether the sheet is for sealing, sliding or insulation duty. With those inputs we confirm grade, format, tolerance and machining route, and return a configuration with the delivery scope.
