русский
Deutsch
عربى
Gansu Juxiang Fluoroplastics Technology Co.,Ltd. is a Flexible Graphite Composite Reinforced Plate (Gasket) manufacturer supplying both full plate and finished cut gaskets from the JXF3000 series. Production runs across two bases in Zhejiang and Gansu, China, alongside our fluoroplastic sheet, rod, tube and machined-component lines.
The range begins with unreinforced flexible graphite plate and continues through stainless steel tanged sheet, adhesive-bonded foil, woven screen and expanded-metal composites. Parts are stamped or precision cut to your flange drawing, with optional edge wrapping and anti-stick treatment. Outside diameters run from 20 mm to 6000 mm, so one construction family covers instrument connections and large vessel or duct flanges.
A Sealing Range Inside a Wider Fluoroplastic Portfolio
Juxiang is a joint venture between Zhejiang Jiaxiang Fluoroplastics Co., Ltd. and Gansu Juhua New Materials Co., Ltd. of the Juhua Group. Our catalogue is built around PTFE, PFA, FEP, PCTFE, PVDF, PEEK and PI materials for semiconductor, hydrogen energy, aerospace, automotive, petrochemical, environmental protection and medical equipment. Graphite composite gaskets sit in that portfolio as the high-temperature, high-integrity sealing option where a fluoropolymer gasket would creep or extrude under load.
For a single flange schedule we can supply the graphite composite gasket, a Modified PTFE Gasket for lower-temperature chemical duty, or an Expanded PTFE Reinforced Flange Gasket where a softer, more conformable seal is required. Keeping those families under one roof keeps gasket thickness, bolting assumptions and handling instructions consistent across a project.
JXF3000 Series: Reinforcement Types and Application Fit
Each construction below is a graphite composite plate with a metallic carrier bonded or mechanically locked into the graphite matrix. The 3000-series number identifies the plate; the 3100-series number identifies the finished gasket cut from that same plate.
| Model (plate / gasket) | Carrier | Construction | Where we recommend it |
|---|---|---|---|
| 3100 | None | Pure flexible graphite, no carrier | Utility engineering flanges, low bolt load, general thermal duty |
| 3001A / 3101A | SUS316 perforated (tanged) sheet | Graphite compounded into a pierced 316 carrier | Chemical and petrochemical flanges handling aggressive media at moderate pressure |
| 3001B / 3101B | SUS304 perforated sheet | Same construction with a 304 carrier | Steam, water, hydrocarbon and general industrial service |
| 3002A / 3102A | SUS316 adhesive-bonded foil | Thin foil bonded to graphite, low profile | Narrow sealing faces and flanges with limited available bolt load |
| 3002B / 3102B | SUS304 adhesive-bonded foil | As above with a 304 carrier | General service where a thin, smooth composite is preferred |
| 3003A / 3103A | SUS316L woven screen | Screen-reinforced, high conformability | Pitted, warped or lightly damaged flange faces and irregular geometry |
| 3003B / 3103B | SUS304 woven screen | As above with a 304 screen | Utility and general industrial flanges with imperfect surfaces |
| 3000FE | Low-sulphur graphite grade | Low-sulphur composite sheet | Austenitic stainless and alloy flanges where sulphur and chloride pickup must be limited |
| 3006A / 3106A | SUS316 cover layer | Graphite core with a stainless cover at the sealing face | Media where direct graphite contact at the sealing face is not wanted |
| 3001TC | Expanded metal plate | Expanded-metal reinforced perforated tooth construction | Heavy-duty and large-diameter joints subject to pressure and temperature cycling |
Working Envelope and Dimensional Scope
The indicators below describe the composite plate and gasket as supplied. The real margin on a given flange depends on bolt load, flange stiffness, media and thermal cycling, which is why we confirm the working point before releasing a construction.
| Project indicator | Value |
|---|---|
| Applicable pressure | ≤ 6.4 MPa |
| Compression rate | 15–35 % |
| Rebound rate | ≥ 20 % |
| Stress relaxation rate | ≤ 18 % at 300 °C |
| Density | ≤ 1.7 g/cm³ |
| Leakage rate (N40 bar) | 1.0 × 10⁻³ cm³/s |
| Outside diameter | 20 mm to 6000 mm |
| Thickness | 0.8 mm to 6 mm |
| Edge-sealed gaskets | Sealing-face width ≥ 10 mm for inner and outer edge wrap; ≥ 15 mm where both edges are to be sealed |
- Edge wrapping closes the graphite edge against media ingress and handling damage, and is applied to inner and outer edges where the sealing-face width allows.
- Anti-stick treatment limits adhesion to flange faces so gaskets release cleanly during maintenance turnaround.
- Thickness and diameter are fixed per size; large parts are cut in one piece where plate size permits and handled flat through packing.
Application Fit and Service Boundaries
Our published scope places the series in utility engineering: plant water, steam, air, inert gas and general utility piping, equipment and container gaskets. For process pipelines, flammable or explosive media, and duties outside the ≤ 6.4 MPa envelope, we review the case with you before releasing a construction. A different carrier, a covered construction or another gasket family may be the correct answer at that point.
Graphite handles high temperature and thermal cycling well, but it is not a universal seal. Strongly oxidising media attack the graphite matrix, and light, highly permeating gases call for a denser or encapsulated build. Where the flange is thin, bolt load is limited or faces are damaged, the screen-reinforced grades conform better than tanged sheet.
Cutting, Marking and Delivery Scope
Plate is stamped or precision cut to your drawing, including bolt holes, tongue-and-groove profiles and inner or outer eyelets. Plate is checked for thickness, density and surface condition before cutting, and finished gaskets are checked against the drawing for outside diameter, bore, bolt circle, hole pattern and edge-wrap width.
- Dimensions taken from your flange drawing or from the dimensional table you specify.
- Edge wrap, anti-stick coating, low-sulphur grade and covered construction selected per line item.
- Marking with size, construction code and batch reference for traceability through installation.
- Flat, protected packing that keeps the sealing face undistorted in transit and storage.
- Delivery documentation and usage guidance issued with the order.
Larger sealing packages can be coordinated with our large integrated molded PTFE sealing frame and gasket range where a flange set combines graphite and PTFE elements.
Information We Use to Configure Your Solution
Our proposal is built on the working point rather than a catalogue number alone. These inputs let us fix construction, thickness and edge treatment in a single pass.
- Flange standard and dimensional table, or a marked drawing with outside diameter, bore, bolt circle and hole pattern.
- Design pressure and design temperature, including cycling, thermal shock or steam-out conditions.
- Media, concentration, phase and any oxidising component in the stream.
- Flange material, facing type, surface finish and the bolt load available at assembly.
- Quantity per size, spare allowance, and whether plate or finished gaskets are required.
- Edge wrapping, anti-stick, low-sulphur or covered construction requirements per line.
- Marking, tagging, packing and documentation requirements agreed for the project.
- Delivery destination and any inspection or acceptance steps to be witnessed before dispatch.
Frequently Asked Questions
What separates the perforated (tanged) construction from the adhesive-bonded one?
Tanged sheet is a pierced stainless carrier that graphite is compounded into, giving a mechanical lock and higher tensile strength for large diameters and higher pressures. Adhesive-bonded foil is thinner and smoother, which suits narrow sealing faces and flanges with limited bolt load. Both are available with SUS304 and SUS316 carriers.
Can you supply sizes outside the 20–6000 mm and 0.8–6 mm window?
The series is supplied within 20 mm to 6000 mm outside diameter and 0.8 mm to 6 mm thickness. Anything outside that window is reviewed against the flange geometry and duty before we confirm a construction, since the carrier type and edge treatment change with size.
How do you handle a flange with pitted or warped faces?
We normally move to the screen-reinforced 3003A or 3103A grades, which conform to surface irregularity better than tanged sheet, or to a covered construction where the sealing face needs a stainless contact layer. Supplying the measured surface condition and flatness with the enquiry shortens that decision.
What documentation accompanies a gasket order?
Finished parts are checked against the approved drawing and marked with size, construction code and batch reference. Delivery documentation and usage guidance are issued with the shipment, and the specific records included are agreed when the order is placed.
