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FREE NEXT DAY DELIVERY ON ORDERS OVER £100
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Specialist Sealants

Tackle complex jobs with confidence using Neasden Hardware’s premium range of specialist sealants. Designed for professional use, our collection covers everything from high-temperature applications and chemical-resistant joints to structural glazing and construction sealing. Whether you’re working with metal, glass, concrete, or plastics, our specialist silicone sealants deliver exceptional adhesion, flexibility, and weatherproofing. Each product is sourced from trusted brands such as Everbuild, OB1, and Soudal, guaranteeing high performance for even the most demanding projects. For trade or DIY use, Neasden Hardware provides professional sealants that meet industry standards and ensure lasting results on every job — all available with fast UK delivery.

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Soft Wax Sticks, for Repair Work, Length 80 mm, 10 in a Box

Hafele

For concealing minor blemishes, quick and easy Contents of set 10x 80 mm length sticks in a box Area of application For repair work Mate...

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Original price £20.55 - Original price £24.15
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Everflex 450 Builders Silicone

Neasden Hardware

Everflex 450 Builders Silicone is a premium quality low modulus non-corrosive neutral cure silicone sealant that adheres to virtually all substrate...

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Intumescent Fire Mastic FS702 310ml

Neasden Hardware

FS702 cures to give a firm but flexible fire seal. Suitable for use in various construction movement joints up to 30%, whilst providing an excellen...

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Original price £1.75 - Original price £1.75
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Everflex Heat Mate Sealant 295ML

Neasden Hardware

Everflex Heat Mate Sealant is a high modulus permanently flexible 100% high temperature silicone which is temperature resistant up to 300°C. Ideal ...

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AC95 Intumescent Acoustic 900ML

Neasden Hardware

Everflex AC95 Acoustic Sealant & Adhesive is a high strength, permanently flexible intumescent acrylic sealant and adhesive specifically formul...

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Everbuild Tecnic 825 Silicon 380ML

Neasden Hardware

Everbuild Tecnic Silicone 825 is a low modulus, neutral curing silicone sealant based on a filled alkoxy curing system, specially formulated to pro...

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Original price £3.99 - Original price £3.99
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Everflex 335 Construction Silicone 295ML

Neasden Hardware

Everflex 335 Construction Silicone is a low modulus reactive cure silicone sealant specially formulated as a cost-effective PVCu sealant, which als...

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Original price £5.99 - Original price £5.99
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About Our Specialist Sealants

At Neasden Hardware, we understand that not all sealing jobs are the same. Our specialist sealants range is designed to provide tailored solutions for projects that demand more than standard silicone. From heat-resistant and chemical-proof sealants to fire-rated and structural bonding products, our collection ensures you’ll always find the right material for the task.

Each specialist silicone sealant is formulated to perform under pressure — offering strong adhesion, durability, and flexibility even in harsh environments. Whether you’re sealing expansion joints, maintaining building exteriors, or bonding materials exposed to vibration or movement, our products are engineered for professional-grade performance.

For industrial applications, our trade sealants offer superior resistance to oil, water, and UV exposure. Many are compatible with a wide range of substrates, including masonry, glass, ceramics, and metal, making them suitable for both repair and construction work. With easy application and reliable curing, these specialist sealants help you achieve a precise, clean finish that lasts.

Choosing the Right Specialist Sealant

Selecting the correct sealant begins with identifying the environment and the materials you’re working with. If you need a product that can handle high heat or direct sunlight, choose a specialist silicone sealant rated for temperature resistance. For chemical or solvent exposure, opt for a sealant designed for industrial or laboratory settings that won’t degrade under harsh conditions.

Fire-rated and intumescent sealants are essential where safety and building compliance are priorities. These specialist sealants expand when exposed to heat, sealing gaps to slow fire spread and smoke penetration. Structural glazing and construction sealants, on the other hand, are formulated for heavy-duty bonding and load-bearing applications — ideal for glass façades, metal frames, and curtain walling systems.

If flexibility is key, hybrid polymer sealants provide excellent movement capability while maintaining adhesion. For general maintenance or repairs, choose an all-weather professional sealant suitable for use both indoors and outdoors. No matter the requirement, Neasden Hardware’s curated selection ensures you’ll find a reliable product that meets specification and performance needs.

Why Buy from Neasden Hardware

Neasden Hardware has earned a reputation as a dependable supplier of high-quality specialist sealants trusted by tradespeople and property professionals alike. We work with industry-leading brands to bring you products that deliver consistent, high-performance results. Whether you’re managing a large-scale build or handling minor site repairs, our range ensures you have the right materials for every scenario.

Our online store makes it easy to compare technical specifications and choose the perfect industrial or trade sealant for your project. We also provide clear product descriptions, curing times, and application details, helping you make informed decisions quickly.

With fast UK delivery, competitive pricing, and excellent customer support, Neasden Hardware is your one-stop shop for professional sealing solutions. From fire protection to weatherproofing, our specialist silicone sealants offer the strength, flexibility, and precision that professionals rely on every day.

FAQs

What are specialist sealants used for?

They’re designed for demanding or unusual environments — such as high heat, chemical exposure, or structural bonding — where standard sealants wouldn’t perform effectively.

Are specialist sealants suitable for DIY projects?

Yes. While they’re formulated for trade use, many are easy to apply with a caulking gun and ideal for home maintenance or renovation tasks.

Can I use specialist silicone sealants outdoors?

Absolutely. Most of our specialist sealants are UV- and weather-resistant, making them suitable for both interior and exterior use.

Do you stock heat-resistant or fire-rated options?

Yes, our range includes high-temperature and intumescent specialist sealants designed for environments exposed to heat or fire risk.