Premium weatherstrip for sliding-window and sliding-door profile systems where buyers require a pile seal with a central barrier option and repeatable bulk-roll supply. This page focuses on the fin-pile series, with optional silicone-treated yarn. For a groove-in straight-pile option, review the aluminium-window brush seal range; adhesive-backed retrofit strips use a different mounting method.
- Profile-insert pile construction with a center-fin option.
- Base width and pile height selected against the actual profile groove and working clearance.
- Standard pile or optional silicone treatment confirmed per quoted model.
- Bulk roll, color, label and export-carton requirements reviewed for OEM orders.
- Sample or drawing approval before volume production.
Premium fin pile weatherstrip specifications
Common market sizes are available for production. Special backing widths, pile heights and fin dimensions can be made to customer drawings or samples; the approved specification controls the exact construction and fit.
| Parameter | Common production option | Required confirmation |
|---|---|---|
| Construction | Profile-insert pile weatherstrip with center-fin option | Fin material, fin position and compatibility with the groove |
| Base width | 4.8, 5.8, 6.8, 7.8 or 10.8 mm | Measured groove width, tolerance and insertion direction |
| Pile height | Selected from the working clearance and quoted construction | Working clearance and required contact without excessive drag |
| Base thickness | Defined by the approved model drawing | Final model drawing or approved physical sample |
| Pile treatment | Standard or silicone-treated option | Application, sample and quoted material specification |
| Color | Black, gray and project colors subject to review | Color sample or reference and order quantity |
| Roll length | Agreed for the selected section and reel | Section size, roll diameter, handling and packing requirement |
| Carton arrangement | Agreed for the selected roll size and carton | Roll size, gross-weight limit and destination requirements |
| Order approval | Drawing, marked sample or trial piece | Fit, appearance, packing and agreed acceptance points |
What the center fin is designed to do
A center fin adds a second barrier between the two pile faces. In a correctly matched sliding profile, it can help control the air, dust or moisture path without relying only on denser or taller fibers. The fin does not replace fit validation: an oversized base can bind during insertion, while excessive pile or fin contact can increase sliding resistance.
Choose this fin-pile series when the profile has room for the barrier and the project requires a more defined sealing interface. A groove-in straight-pile option may be considered when a central fin is unnecessary. An adhesive-backed 5mm / 7mm strip is a separate retrofit option for suitable flat bonding surfaces.
Optional silicone treatment: confirm it on the quotation
Silicone-treated pile is available as an option for applications that need smoother fiber contact or additional moisture management. It is not assumed for every roll shown on this page. State whether the project requires standard pile or silicone-treated pile, and approve the quoted construction before production.
No universal air-leakage, water-penetration, acoustic, UV-life or cycle-life value is claimed for this page. If a project has a test standard, provide the method and acceptance criteria so the relevant material, sample and inspection plan can be reviewed.
How to specify a window pile seal without costly mismatch
- Measure the profile-groove width and depth at several points.
- Measure the operating clearance that the pile must bridge.
- Confirm whether a center fin is required and where it must contact.
- Choose standard or silicone-treated pile and provide a color reference.
- State roll length, labeling, carton, quantity and destination.
- Approve a drawing or trial sample in the real profile before volume production.
A profile drawing is preferred. If no drawing is available, send a cut section, the existing weatherstrip and clear caliper photographs. This reduces the risk of insertion problems, excessive sash drag and replacement claims.
Commercial value for importers and window manufacturers
- Lower fit risk: groove, clearance and fin position are reviewed before the production order.
- Cleaner product segmentation: fin-pile and straight-pile specifications can be stocked as distinct lines for different customer needs.
- Distribution-ready packing: roll length, labels and cartons can be reviewed for warehouse and resale requirements.
- Repeat-order control: the approved construction and dimensions can be referenced for later batches.
Typical applications
Aluminum sliding windows, sliding doors, compatible PVC profile systems, architectural hardware distribution, window fabrication lines, renovation supply and private-label weatherstrip programs.
Fin-pile window and sliding-door sealing
The fin is a continuous barrier between pile rows. It is the defining feature of this model, unlike the straight-pile version. Specify fin height and flexibility separately from brush height. A plastic barrier film, textile barrier and quoted PVC fin are not interchangeable material descriptions.
For a sliding-door weather strip used against drafts or wind-driven moisture, check the contact path at the meeting stile and frame side. A fin cannot correct an unsealed corner, blocked drainage or a distorted profile. A request for a waterproof window pile weather strip should therefore include the complete window’s test requirement. For a sliding door waterproof seal strip enquiry, provide the seal position and the finished assembly’s required water-penetration test. These details guide selection of the brush and fin alongside frame drainage and mating contact.
Frequently asked questions
Is every item on this page silicone-treated?
No. Standard and silicone-treated pile are separate options. The quotation and approved sample must identify the required treatment.
Can you select the base width from a photo?
A photo can help identify the construction, but it is not enough to approve fit. Send a groove drawing, measured sample or marked caliper photos.
Is taller pile always better?
No. Excessive pile height can bend unevenly or increase sliding drag. Height should be selected from the working clearance and validated in the actual profile.
Can roll length and private-label packing be customized?
Yes, subject to section size, quantity and packing review. State the desired roll length, label, carton, pallet and destination requirements.
What should an importer send for a quotation?
Send the profile drawing or sample, groove size, working clearance, fin requirement, pile treatment, color, roll length, quantity and destination.
Request a fin-pile weatherstrip quotation
Share your profile drawing or sample, base width, working clearance, fin requirement, treatment, roll length and annual quantity. We will review fit, sampling and OEM packing before quotation.
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