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Gansu Juxiang Fluoroplastics Technology Co.,Ltd. manufactures multi-directionally expanded PTFE sealing materials at two production bases in Zhejiang and Gansu. The Multi-Directionally ePTFE Gasket Tape range is made for flange connections that are awkward to seal with a conventional sheet gasket: large-diameter vessels, reactor heads, turbo generator housings, aerospace ground equipment and chemical lines where creep, chemical attack and limited bolt load occur together. Tape is supplied in rolls and in converted rings, gaskets and profiles cut to drawing.
As a Multi-Directionally ePTFE Gasket Tape manufacturer, we configure each order from the flange schedule, media and bolting data rather than from a catalogue number alone. Width, thickness and roll length are fixed against the actual joint, and the supply format is chosen so the tape can be handled, positioned and compressed without waste on site.
Product Range and Positioning
The tape is an expanded PTFE product. Multidirectional expansion creates a fibrillated structure with strength in more than one direction, so the tape resists tensile stress during wrapping and handling while remaining soft enough to conform to flange imperfections. It is chemically inert and suited to aggressive media within the service envelope confirmed for the grade.
- High compression and high sealing performance for joints with limited bolt load.
- Excellent creep resistance under sustained compression.
- High tensile strength for wrapping large diameters without tearing.
- Anticorrosion behaviour for chemical, petrochemical and power equipment.
- Continuous tape construction, so a large flange can be sealed without a spiral-cut sheet joint.
| Supply parameter | Standard options | Configuration note |
|---|---|---|
| Thickness | 3.17 mm (1/8 in); 6.35 mm (1/4 in) | Chosen against flange width, surface finish and available bolt load |
| Width | 10 mm (3/8 in); 15 mm (1/2 in); 20 mm (3/4 in); 25 mm (1 in); 30 mm (1-1/4 in) | Slit to raised-face, full-face or custom groove dimensions |
| Roll length | 7.7 m (25 ft); 15.3 m (50 ft); 30.5 m (100 ft); 5 m; 10 m; 20 m | Matched to flange circumference and site handling |
| Conversion | Rolls, spools, cut lengths, rings, gaskets and kits | Cut to drawing where a preformed gasket is preferred |
Application Fit and Joint Design
Large-diameter flanges are the natural application. A sheet gasket in a 2 m or 3 m diameter is awkward to store, easy to buckle and difficult to align; tape is wrapped progressively and cut to the final length. The same logic applies to reactor manways, turbine and generator casings, aerospace test stands, glass-lined vessel nozzles, plastic-lined pipe and tank mouths.
Not every joint needs tape. For smaller standard flanges, a cut gasket from our Expanded PTFE Reinforced Flange Gasket range or a Modified PTFE Gasket can be the more practical supply. We keep those routes open so the sealing method follows the joint rather than a single product preference.
- Flange surface finish, flatness and joint type.
- Bolt size, grade, lubrication and torque sequence.
- Design pressure, test pressure and operating temperature.
- Media concentration and any trace chemicals.
- Available seating area and gasket width.
Expanded PTFE works because the fibrils compress and recover. The tape fills surface irregularities at relatively low seating stress, then maintains residual load as the joint cycles. Creep resistance matters most on large flanges, where bolt load is shared over a long circumference and small losses at each bolt accumulate. We review the joint inputs with the customer and confirm tape width and thickness against the available seating area. Where the flange calculation is tight, we say so before the order is released.
Configuration, Conversion and Supply Formats
Standard tape is wound on paper or plastic cores and interleaved where needed. Widths between the standard slit sizes can be produced for a specific flange, and roll length is set to the circumference plus an allowance for the joint. Each roll is labelled with grade, thickness, width, length, batch and handling direction.
Conversion is handled in the same production route. Tape can be cut into rings, gaskets, profiles and kits to drawing, which suits projects that want a preformed sealing element but still need the multidirectional ePTFE construction. Kits can be collated by flange number or equipment tag for site distribution.
- Standard thickness: 3.17 mm and 6.35 mm.
- Standard widths: 10, 15, 20, 25 and 30 mm.
- Standard lengths: 7.7 m, 15.3 m, 30.5 m, 5 m, 10 m and 20 m.
- Custom slit width, roll length and core type.
- Cut gaskets, rings and profiles to drawing.
- Batch and handling marks on every roll.
Quality Control and Acceptance
Both production bases run under the same quality route. Process parameters are monitored in real time, and finished tape is checked against the agreed inspection plan before release. The plan normally covers thickness, width, length, roll weight, splice condition, visual defects and packaging. Batch identification is retained so a roll can be traced to its production run.
| Project input | What we confirm |
|---|---|
| Flange standard, nominal size and facing | Tape width, gasket OD/ID and whether a full-face or raised-face layout applies |
| Media, concentration and operating temperature | Grade suitability and any restriction on the ePTFE tape |
| Design pressure and test pressure | Joint thickness and compression assumption |
| Bolt size, grade, lubrication and torque | Seating stress and whether the bolt load is adequate |
| Flange surface finish, flatness and joint type | Surface preparation and installation method |
| Equipment drawing or bill of materials | Conversion route: roll, cut ring, gasket or kit |
| Quantity, roll length and delivery schedule | Winding, packing and shipment plan |
| Documentation, marking and packaging requirements | Inspection records, labels and export packing |
Acceptance testing is agreed at order stage. Where a project requires material certificates, dimensional records or a witnessed inspection, those requirements are written into the order before production. Documentation and handling guidance are issued with the shipment so site teams know how the tape should be stored, cut and installed.
Information We Use to Configure Your Solution
A quotation is only useful if it matches the joint. We ask for the flange standard, nominal size, pressure class and facing, together with the media, concentration, operating temperature and design pressure. The bolting schedule matters as much as the flange: bolt size, grade, lubrication and torque determine whether the tape can be seated properly.
- Flange drawing or schedule, including raised-face, full-face or groove details.
- Line or equipment tag, medium, concentration and operating temperature.
- Design pressure, test pressure and cycling conditions.
- Bolt size, grade, lubrication and tightening procedure.
- Required tape width, thickness and roll length, or the finished gasket drawing.
- Quantity, delivery date and destination.
- Documentation, marking, packaging and pallet requirements.
For repeat supply, the original specification is kept on file so a replacement roll or cut gasket matches the installed joint. If the flange, bolting or process conditions change, we review the configuration again rather than assuming the previous tape still fits.
Packaging, Delivery and Serviceability
Tape is wound on cores, interleaved where needed, labelled and packed in export cartons or on pallets. Rolls are protected against crushing and contamination during transport. Cut gaskets and kits are packed flat with the drawing reference and batch number.
Replacement supply is straightforward because the tape is a consumable sealing element rather than a machined component. Repeat orders can be run to the original width, thickness and length, or adjusted if the flange or bolting has changed. We provide handling and installation guidance, and our technical team responds to application questions within 12 working hours.
Frequently Asked Questions
What sizes of Multi-Directionally ePTFE Gasket Tape do you supply?
Standard thicknesses are 3.17 mm (1/8 in) and 6.35 mm (1/4 in). Standard widths are 10, 15, 20, 25 and 30 mm, with intermediate widths slit to order. Standard roll lengths are 7.7 m, 15.3 m, 30.5 m, 5 m, 10 m and 20 m. Cut rings and gaskets are made to drawing.
Can the tape be supplied as cut gaskets instead of rolls?
Yes. We convert the same multidirectional ePTFE tape into rings, gaskets, profiles and kits. This suits flanges where a preformed gasket is easier to install, while keeping the creep resistance and conformability of the tape construction.
Which applications use Multi-Directionally ePTFE Gasket Tape?
Large-diameter flange sealing is the main use, including reactors, turbo generators, aerospace equipment, chemical pipelines, tank mouths and glass-lined or plastic-lined vessels. The tape is also used where a sheet gasket would be difficult to handle or where bolt load is limited.
What information do you need to quote a project?
Send the flange standard, size, pressure class and facing, the media and operating temperature, design and test pressure, bolt schedule, quantity, delivery date and any documentation or packaging requirements. A drawing or equipment tag helps us confirm the conversion route and avoid a mismatch on site.
Related Products and Categories
Our portfolio also includes Products for applications with different operating ranges, interfaces or integration requirements.
