Stelmax 1961 Gap Filler & Sealant White 300ml Image

Stelmax 1961 Gap Filler & Sealant White 300ml

SKU: ST1961

Brand: Stelmax

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High-Solid Gap Filling Formula: Specially formulated with a high-solid PVC resin to fill larger gaps while creating a strong, permanent bond.
Excellent Adhesion: Bonds securely to rigid PVC, plasticised PVC, ABS, and many porous building materials, making it ideal for a wide range of applications.
Weatherproof & UV Stable: Once cured, it offers outstanding resistance to weather, UV exposure, and common household chemicals for long-lasting durability.
Fast Skin Formation: Rapidly forms a protective skin to help prevent contamination from dust and debris during curing.
Easy Application: Supplied in a 300ml cartridge compatible with any standard sealant gun for quick and precise application.

Description

Stelmax 1961 Gap Filler & Sealant White 300ml

Professional PVC Gap Filler & Sealant for Strong, Long-Lasting Joints

Stelmax 1961 Gap Filler & Sealant White 300ml is a professional-grade, high-solids PVC filler and sealant, specially formulated to create exceptionally strong, maintenance-free joints on both rigid and plasticised PVC. Widely trusted throughout the window, door, and glazing industries, it is ideal for sealing, bonding, and filling gaps around uPVC frames, trims, fascia's, and other PVC installations.

Its high PVC resin content makes Stelmax 1961 particularly effective for filling larger gaps where a durable, long-lasting finish is required. Once fully cured, it forms a tough, weather-resistant seal that closely matches the appearance and performance of high-quality rigid PVC. It also bonds effectively to many porous building materials, making it suitable for both new installations and repair work.

Supplied in a 300ml cartridge that fits any standard sealant gun, Stelmax 1961 is easy to apply and develops a rapid surface skin to help protect the seal from dust and contamination during curing.

Key Features

High-solids PVC formula for filling larger gaps and creating strong, maintenance-free joints
Excellent adhesion to rigid and plasticised PVC, plus many porous building materials
Weatherproof, UV stable, and water resistant once fully cured
300ml cartridge suitable for use with any standard sealant gun

Available in White and Mahogany, with RAL colour matching available on request, Stelmax 1961 provides a clean, professional finish that blends seamlessly with uPVC profiles. Its combination of excellent adhesion, fast skin formation, and long-term durability helps reduce maintenance and rework, making it a popular choice for both trade professionals and DIY installers.

Whether you're installing new uPVC windows, sealing roofline products, or carrying out repair work, Stelmax 1961 Gap Filler & Sealant White 300ml delivers a reliable, weather-resistant seal that's built to last.

Technical Information

Delivery: 1-2 Working Days
Lead Time: In Stock
Size: 300ml
Colour: White
Brand Name: Stelmax
Weight: 0.370 Kg

Delivery & Returns

Delivery

The despatch timings we publish are estimates and due consideration needs to be made when making purchases with tight deadlines and as such we shall not be liable for any losses, costs, damages, charges, or expenses caused by any delay for delivery of the goods.

Returns Policy For Brissco Online

We appreciate that there may be occasions you may wish to return items. To help you with this process please see our returns policy below.

Returning an item – Damaged

In the event you receive damaged goods we will arrange a replacement item for you. However, it is your responsibility to notify us within 72 hours of receipt that an item has been received damaged (please see risk below).

Returning an item – Risk

On receipt of the delivery you, the customer, are responsible for those goods and any loss or damage to the goods shall be at your own risk.

Returning an item – Incorrect

If you receive incorrect goods it is your responsibility to notify us within 72 hours of receipt at which point we will make the necessary arrangements.

Delivery shortages

Firstly, our carrier delivers parcels/packages. Any shortages of them must be reported to the driver on receipt. Secondly, shortages of contents of the parcel(s)/package(s) against the enclosed Brissco advice note must be made within 72 hours.

PDFs

Stelmax 1961 Gap Filler Data Sheet

FAQs

1. What is Stelmax 1961 Gap Filler & Sealant used for?

Stelmax 1961 is a professional-grade PVC gap filler and sealant designed for filling larger gaps, bonding rigid and plasticised PVC, and creating strong, maintenance-free joints in window frames, trims, and other uPVC installations.

2. What makes Stelmax 1961 different from Stelmax 1965?

Stelmax 1961 has a higher solid content, making it better suited to filling larger gaps while still providing a strong, durable, colour-matched finish.

3. What materials can Stelmax 1961 be used on?

It is ideal for:

Rigid uPVC
Plasticised PVC
Window and door frames
PVC trims and profiles
Many porous building substrates

4. Is Stelmax 1961 suitable for outdoor use?

Yes. Once fully cured, it forms a water-resistant, UV-stable seal that is designed to withstand external weather conditions.

5. Can Stelmax 1961 be used for window frame installation?

Yes. It is widely used throughout the window and building industries for window frame installation, sealing, attachment work, and repair applications.

6. What colour is Stelmax 1961 available in?

It is available in White and Mahogany, with RAL colour matching available on request for selected applications.

7. Does Stelmax 1961 require a special applicator?

No. The 300ml cartridge fits any standard sealant gun, making it quick and easy to apply.

8. Does Stelmax 1961 create a colour-matched finish?

Yes. Once cured, it closely resembles high-quality rigid PVC, providing a neat, professional finish that blends well with PVC profiles and trims.

9. Is Stelmax 1961 suitable for DIY users?

Yes. Although trusted by professional window installers, it is also suitable for competent DIY users looking for a durable, professional-quality repair or installation solution.

10. What are the main benefits of Stelmax 1961?

Stelmax 1961 offers:

Excellent adhesion to PVC and many porous surfaces
Ideal for filling larger gaps
Strong, maintenance-free joints
Water and UV resistance once cured
Fast skin formation
Professional colour-matched finish
Easy application with a standard sealant gun

Reviews

Rebecca

Outstanding Quality and Great Brissco Support

We purchased Stelmax 1961 for a refurbishment project involving several uPVC windows and fascia boards, and it performed exactly as hoped. It bonds exceptionally well, fills larger gaps neatly, and leaves a clean, maintenance-free finish that looks excellent once cured. Brissco's customer service was first class throughout. They offered helpful advice, kept us informed about delivery, and ensured the order arrived promptly. It's refreshing to deal with a supplier that stocks quality products and genuinely cares about its customers. We'll certainly be ordering from Brissco again for future projects.

Lewis

Strong, Durable and Easy to Apply

This sealant made finishing our window installation much easier. The high-solids formula filled imperfections without shrinking, and once cured it created a strong, neat joint that closely matched the surrounding uPVC. The standard cartridge also worked perfectly with our sealant gun.

Andrew

Professional Finish Every Time

I've used several PVC fillers over the years, but Stelmax 1961 is by far one of the most reliable. It applies smoothly, skins over quickly, and leaves a durable, weather-resistant finish that stands up well to the British weather. It's ideal for window frames, trims and fascia installations. Brissco were brilliant to deal with. Their prices were competitive, communication was excellent, and my order arrived exactly when expected. An excellent product supplied by a company that clearly values good customer service.

Martin

Excellent for Filling Larger Gaps

We used Stelmax 1961 when installing new uPVC fascia boards and window trims, and the results were superb. It fills larger gaps with ease and cures to a tough, professional-looking finish that blends perfectly with the surrounding white PVC. Once dry, it looks like part of the original installation.