Custom Soft PVC Profile Extrusion
Dachang Soft PVC Profile
Flexible PVC sealing strips, gaskets, U channels, L angles and automotive trim, extruded to your own cross section in Dongguan since 1998. Published hardness runs from Shore A 50 to 80, sections from a 3 mm window fin up to a 50 mm channel, supplied in cut lengths or 50 m rolls, with a custom die cut from your drawing in 72 hours.
What you can order from this flexible PVC range
Buyers reach this page for three different jobs. Some need a compression gasket or lip seal for a door, window or furniture panel. Some need a thin trim strip that caps a metal edge on a vehicle or an enclosure. Some need a U channel or L angle that carries an LED lens. All three are extruded on the same lines at Dachang, and the sections below are the tools already cut and photographed, not a fixed catalogue.
Four of the twelve are published in polycarbonate or a PC and PVC combination rather than flexible compound, so the material stated on each card tells you in one glance whether an item belongs in your shortlist. The industries Dachang lists for its flexible sections are automotive, construction, marine, furniture, window and door, and farm and garden, which covers most of the OEM assemblers and fabricators who arrive here with a drawing in hand.
Why buyers place custom extrusion work with Dachang
A manufacturer since 1998
An extrusion plant in Tangxia, Dongguan, not a trading office, with processing support in Guangzhou, Shanghai and Beijing.
Custom die in 72 hours
Dachang states a custom mould is made from your drawing within 72 hours of approval.
Tolerance to ±0.1 mm
The published capability on PVC extrusion profiles, tight enough for press fit sealing sections.
One supplier, many compounds
PVC, PP, PE, PMMA, PC, ABS, PS, HIPS, TPU, TPE, EVA and POM run on the same lines.
Hardness tuned to your gap
Shore A 50 to 80 is published across the flexible sealing range.
Shipping worldwide
Exports go to Asia, Europe, Africa, North America and South America.
Compare every published specification before you shortlist
Every figure below is taken from the product page it sits on, so you can rule sections in or out without opening twelve tabs. An empty value means the figure is not published for that item rather than unavailable, and Dachang will confirm it against your enquiry.
| Profile | Material as published | Published size | Hardness | Supply form | Colours |
|---|---|---|---|---|---|
| Soft PVC Seal Strip Side For Windows | PVC | 3 × 1.5 mm, 0.8 mm thick | Shore A 75 | Not published | Black |
| Soft Gasket PVC Profile | Soft PVC | Custom size and shape | Shore A 50 to 80 | Short pieces or rolls | Black, grey, white, transparent |
| Soft Sealing PVC Profile | Soft PVC, matte | Standard or custom made | Not published | Cut lengths or 50 m rolls | Multiple colours |
| Soft Door PVC Profile | Soft PVC, UPVC, TPE, EPDM | Custom size and shape | Not published | Cut to length or rolls | Not published |
| PVC Trim Strip For Automotive Applications | PVC | 20 × 6 mm, 5 mm thick | Shore A 75 | Not published | Black |
| Plastic Flexible Profile | PVC | 40 mm wide | Not published | 0.5 m to 5 m lengths | Grey |
| Plastic U Channel PVC Profile | Polycarbonate, PVC | 10 to 50 mm wide | Not published | 0.5 m to 5 m lengths | Clear, semi-clear, opal |
| Plastic PVC L Angle Profile | Polycarbonate, PVC | 30 mm wide | Not published | 0.5 m to 5 m lengths | Clear, semi-clear, opal |
| PVC Door Extrusion | PVC | 40 mm wide | Not published | 0.5 m to 5 m lengths | Clear, semi-clear, opal |
| Plastic Door Extrusion | Polycarbonate, PVC | 39 mm wide | Not published | 0.5 m to 5 m lengths | Clear, semi-clear, opal |
| Serrated Shape LED Strip Opal Diffuser | PC | 50 × 40 mm, 1.5 mm wall | Not published | Carton box | Primary colour |
| L Angle Triangle Plastic Extrusion | Not published | Made to drawing | Not published | Not published | Not published |
Hardness, wall thickness and colour all move with the compound, so confirm the exact combination for your part in writing before a die is cut.
How buyers usually narrow this range down
Start from the job the section has to do
- Closing a gap in a door or window frame. The gasket and sealing sections are the group to look at. Published hardness spans Shore A 50 to 80, so compression force can be matched to the gap instead of forced onto whatever is in stock.
- A thin fin or lip on a sash. The window seal strip is the smallest published section here, 3 mm by 1.5 mm on a 0.8 mm wall.
- Capping a metal edge. The automotive trim strip is the section published for that duty, stated to guard against dents, notches, scratches, dust, air and rain.
- Carrying an LED lens or an electronic part. The U channel at 10 to 50 mm, the L angle at 30 mm, the two door extrusions at 39 and 40 mm and the serrated diffuser all carry those published applications in clear, semi-clear or opal.
Then check what forces a change of compound
- Temperature. The PVC window seal strip is published for −40 °C to 80 °C and the PC and PVC L angle for −40 °C to 120 °C. Dachang states plainly on the trim strip page that flexible compound stiffens in winter and softens in summer heat, which is worth designing around rather than discovering on site.
- Fire behaviour. A V0 flame retardant grade is published for the window seal strip and self extinguishing grades meeting UL 94 are noted for the L angle. Neither statement covers the whole range, so name your requirement and ask which grade applies.
- Supply form. Rolls suit continuous application and cut lengths suit kitting. The sealing profile is published in 50 m rolls, the gasket and door sections in short pieces or rolls.
- Colour. Flexible sections are published in black, grey, white and transparent. The lens type sections come in clear, semi-clear and opal.
Still deciding between two sections? Send both part names with your gap dimension and Dachang will come back with the hardness and wall thickness that suit. Ask the engineering team.
Custom soft PVC extrusion made to your own cross section
Most of the profiles above began life as a customer drawing. If your section is not on this page, that is the normal starting point rather than a problem. Dachang states a custom mould is made from your drawing within 72 hours, publishes a tolerance capability as tight as ±0.1 mm on its PVC extrusion profiles, and runs PVC, PP, PE, PMMA, PC, ABS, PS, HIPS, TPU, TPE, EVA and POM on the same lines, which is what makes a dual hardness or alternative material version of your part possible without moving supplier.
Send the cross section
A drawing, or a sample of the part you are replacing, with the dimensions that must be held marked up and the ones that can move left open.
Agree material and hardness
Soft PVC, UPVC, TPE and EPDM are all published options on the door profile, so this is settled before tooling money is spent rather than after.
Die manufacture
Dachang publishes custom mould delivery within 72 hours of the approved drawing.
Sample approval
Check the section in your own frame or assembly and confirm the fit before the line runs.
Production and export packing
Published options across this range are carton boxes, wooden boxes, woven bags and rolls, chosen by the length you order.
Tooling charges, tooling ownership and payment terms differ by project. The terms published on one profile in this category are T/T with a 50 % down payment on tooling and order and a tooling lead time of around 15 days, so confirm what applies to your part before you commit.
Lead times and export packing we publish today
| Profile | Published lead time | Published packing |
|---|---|---|
| Soft Gasket PVC Profile | 15 to 20 days | Per linear length or in roll. Carton box under 3 m, woven bag or wooden box for longer pieces |
| Soft Sealing PVC Profile | 2 to 3 weeks after a 30 % deposit is received | In roll or in piece, export carton box |
| Soft Door PVC Profile | 2 to 3 weeks after formal order and deposit | In length or in roll, 100 or 200 pieces per carton box |
| Serrated Shape LED Strip Opal Diffuser | Tooling around 15 days | Carton box |
Lead times for the other sections, and minimum order quantities for all of them, are not published on this site. Both are quoted per enquiry against your cross section, compound, colour and annual volume.
What to send Dachang so your quotation comes back complete
Price, minimum quantity and delivery date for a flexible profile all depend on the die, the compound and the run length, which is why a bare request to quote costs both sides a week of emails. An enquiry carrying the points below is normally quotable first time.
About the part
- Cross section drawing, or a dimensioned photograph of the existing profile against a ruler
- Which dimensions are critical, and the tolerance you need on each
- Wall thickness, if the mating part fixes it
- Target hardness in Shore A, or simply the gap the seal has to close
About the order
- Colour reference, either a Pantone or RAL number or a physical sample
- Cut length, or roll length if the profile is supplied continuous
- First order quantity and expected annual volume
- Destination port, plus any flame, temperature or material compliance requirement you have to satisfy
A sales representative replies to enquiries within 24 hours according to the Dachang contact page. Send your drawing and requirements, or email ken@euson.cn directly.
Questions purchasing teams ask before ordering
Are you a manufacturer or a trading company?
Dachang is a plastic extrusion factory in Tangxia, Dongguan, established in 1998, with its own lines and its own mould making, plus processing support in Guangzhou, Shanghai and Beijing. That is why a custom die can be quoted, cut and sampled here rather than passed down a chain, and why hardness, colour and wall thickness are things you can negotiate on your part instead of picking from someone else's stock list.
What hardness range can you supply in flexible PVC?
Shore A 50 to 80 is the range published for the soft gasket section, and Shore A 75 is the specific figure published for both the window seal strip and the automotive trim strip. If your application sits outside that band, give the target hardness or the closing force the seal has to deliver and it can be checked against available compounds before any tooling is cut.
Is every item on this page actually flexible PVC?
No, and it matters for your shortlist. The gasket, sealing, door and window sections are published as soft PVC, with UPVC, TPE and EPDM also listed on the door profile. The U channel, the L angle and the plastic door extrusion are published as polycarbonate or PVC, and the serrated diffuser as PC. The comparison table above shows the material stated for each item so you can filter in one pass.
Can you extrude a section that is not shown here?
Yes. The twelve profiles listed are tools already cut, not the boundary of what the lines run. Dachang publishes custom mould manufacture from a customer drawing within 72 hours and a tolerance capability as tight as ±0.1 mm on its PVC extrusion profiles. Send the cross section with critical dimensions marked, plus the material and hardness you are aiming for, and the quotation comes back against your own part rather than a near match.
What is the minimum order quantity and the unit price?
Neither is published for this category, because both move with the die, the compound, the colour and the run length. Sending the cross section, target hardness, colour reference, cut or roll length and your first order and annual quantities is enough to get a firm figure back. Where lead time is published it is 15 to 20 days for the gasket profile and 2 to 3 weeks after deposit for the sealing and door profiles.
What material compliance documentation can you provide?
Dachang states that its materials are supplied to RoHS and REACH requirements, publishes a V0 flame retardant grade for the window seal strip and notes self extinguishing grades meeting UL 94 for the L angle profile. These are compound specific statements rather than category wide claims, so name the compound and the market you are shipping into and ask for the declaration that covers that combination.
How will the profiles be packed for export?
Packing published across this category follows length and form. Export carton boxes for cut pieces, 100 or 200 pieces per carton on the soft door profile, woven bags or wooden boxes for lengths beyond roughly 3 m, and rolls where the profile is supplied continuous, with 50 m rolls published on the soft sealing profile.
Do you supply buyers outside China?
Yes. Dachang has extruded plastic profiles in Dongguan since 1998 and states that products are exported to Asia, Europe, Africa, North America and South America. Give your destination port with the enquiry so packing and shipping can be quoted alongside the parts.
Send your cross section and get an answer you can quote from
Dachang has been extruding plastic profiles in Tangxia, Dongguan since 1998, running flexible and rigid compounds on the same lines and shipping to buyers across five continents. Attach a drawing or a photograph of the part you need matched, tell us the hardness and the length, and a reply comes back within 24 hours.
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