WRAS Approved Injection Sealant & Leak Sealing Compounds
At Seal Team Systems, we’re the specialists in WRAS approved injectable leak sealing using only high-quality, tested injection sealant and leak sealing compounds. We focus on keeping your site moving by applying tough, compliant solutions for water, chemical or steam leaks, without the need for costly shutdowns. Since 2005, we have delivered successful online leak sealing services on high-pressure steam mains, chemical pipelines, boilers, water mains and more throughout the UK. Our experienced team uses polyurethane and PTFE-based compounds to seal leaks even in harsh, high-temperature and chemically corrosive settings. All our materials are rigorously tested for compliance with WRAS, DWI, and BS 6576, so you can be confident of safety, asset integrity, and audit-ready documentation for your local authorities.
We work with a variety of structures and systems: concrete structures, steel pipework, valves, including gland packings, and expansion joints in tunnels, power stations, civil infrastructure, and commercial buildings. Our leak sealing compounds provide lasting resistance against water ingress, moisture, acid, alkali, wear and ongoing exposure. For guidance on choosing an injection sealant or to book our leak sealing team, contact us directly by phone or email.
Seal Any Leak With PTFE Injectable Leak Sealing
Polytetrafluoroethylene (PTFE) is an essential material used for injectable leak sealing and injection sealant applications. Small cracks or voids can often be sealed with silicone paste or epoxy putty, but for high-pressure environments or exposure to chemicals, more substantial sealants and advanced techniques are required.
One key advantage of using an injectable sealant like PTFE is that it can seal gland packings, construction joints, valve bonnets and flange joints, with no shutdowns necessary. It is generally applied to the outer rings of pipe joints, filling any voids and forming a flexible surface connection. This makes it an ideal solution for sealing pipework, concrete structures, and masonry walls in high-pressure and chemical environments.
PTFE’s ability as a leak sealer is exceptional. With this polyurethane based sealant, there’s no need to push coolant or flush water through pipelines once inserted. The compound’s low viscosity and very low viscosity forms enable it to fill micro-voids, create a durable seal, and perform reliably under weight, movement, and extreme pressure. PTFE also cures quickly, resists UV light, and offers strong protection against moisture, water penetrations, and chemical wear, making it a trusted choice for critical structures.
The Benefits Of Sealing Leaks With Injectable Sealants
Leak-Free Main Lines
Our injectable sealants are supplied and ready for professional application. We ensure your mains line remains leak-free. This maintains system efficiency, reduces risk, and protects your site from water penetrations and costly downtime.
Easy Installation
PTFE is straightforward to install and is applied quickly by our experts. Its low viscosity formula allows it to penetrate cracks, expansion joints, and voids with minimal effort, making it an effective solution for complex applications.
Extended Lifespan
Using PTFE and other polyurethane-based sealants can significantly extend the life of your equipment. They reduce wear, tear, and environmental damage, keeping your systems durable, flexible, and performing at a high standard for longer.
Minimal Downtime
PTFE reduces the need for offline repairs, meaning less downtime and less interruption to production. It can seal water leaks, chemical leaks, and other failures live on-site, keeping your operations running free from disruption.
What Is Polytetrafluoroethylene (PTFE)?
PTFE is a high performance material within the fluoropolymer family, composed of carbon and fluorine atoms. Known for its versatility, it’s widely used across industrial applications and high pressure environments where chemicals, pressure, and movement are constant.
Its properties include outstanding chemical resistance, excellent adhesion, resistance to UV light, and the ability to cure quickly in wet or dry conditions. PTFE is suitable for construction joints, concrete surfaces, and pipework, providing durable protection against water, moisture, and wear.
It remains flexible, maintains its form, and is proven to perform in tunnels, dams, and concrete structures throughout the UK. These features make PTFE an ideal sealant for a wide range of applications, from heavy-duty industrial sites to commercial structures that require WRAS compliance and reliable curing.
What Are Popular Applications With PTFE?
PTFE is your ideal solution if you are looking for a material with an incredibly high melting temperature and very low viscosity. Our team has been using this injectable sealant for many years across a diverse range of applications, including including those with very low viscosity.
PTFE can be applied for sintering, compression moulding, hot stamping, or full extrusion of products on specialist machinery. It can also form around wire insulations, tapes, and tubes, creating a strong surface connection. The compound’s durable properties and quick-curing form make it a reliable choice for construction joints, masonry walls, and overhead elements. It is compatible with all common materials, including metallic and concrete structures.
The range of properties that PTFE can provide you with depends on the different processing methods you follow, such as the polymer particle size, the temperature at which sintering occurs, and the pressure. It easily handles movement, weight, and pressure while maintaining its durable form. The range of benefits and advantages depends on the temperature, pressure, and curing conditions during production.
If PTFE is not suitable, our team can recommend alternative sealants from our WRAS-approved range, ensuring you always receive the best professional solution for your site.
Commercial Comparison: How to Choose the Right Injection Sealant
When comparing injection sealant options, assess the nature of the leak, the leaking medium (water, oil, gas, acid), the present structure, required temperature range, and chemical exposure. Some sealants are better for high temperature or strong alkali conditions, while others perform best with water or low temperature environments. The injection process, curing characteristics, and flexibility of the compound are key to achieving a lasting repair.
If you need technical advice on the best leak sealing compound for your site, we’re here to guide you through the selection, compliance, and installation process. We always recommend the most suitable resin injection or concrete injection solution for your leakage, with full compliance assurance.
How Injection Sealant Works: Our Process
Our leak sealing method begins with careful surface preparation and assessment of the leaking medium, pressure, medium range, and exposure risk. We then install injection ports along cracks or failed joints and use calibrated pumping equipment to apply the online leak sealing compound precisely where required. The resin is injected under measured pressure into the sealing cavity, joints, voids, and cracks, saturating the defect fully.
This injection process allows us to seal leaks while systems are live, even at high pressure and high temperature. The compounds cure quickly, maintain flexibility, and resist movement or vibration. PTFE and polyurethane sealants fill micro-voids, survive in extreme temperatures, and create a secure, long-term seal. We ensure compliance and provide detailed certificates for every job.
Key benefits of our injection sealing process:
- Less downtime and disruption to services
- Suitable for a wide range of leak types and structures
- Extends asset lifespan by up to five times with early intervention
- Long-term compliance with WRAS and PAS2035
Why Choose Our Leak Sealing Compounds?
Every sealant and compound we supply is engineered for challenging environments, providing durable, flexible seals in live pipelines, movement joints, expansion joints, and along the most intricate construction details. Our leak sealing compounds withstand high pressure, aggressive chemicals (acid and strong alkali), gas, oil, and water ingress. Curing times, medium type and temperature range are always matched to your application.
Our WRAS-approved products are:
- Proven on water, gas, oil, and chemical leaks
- Suitable for high and low temperature applications
- Fully compliant with potable water and WRAS standards
- Sourced and installed by a safe contractor-approved team
- Backed by full technical documentation and compliance records
Get an Injectable Online Leak Sealing Quote
If you are facing a live leak, need an injection sealant with proven performance, or want robust online leak sealing compounds for long-term protection, get in touch with Seal Team Systems today. We’ll provide detailed advice, technical recommendations and a prompt quote. Our WRAS and Safe Contractor-approved leak sealing services are available UK-wide for all sectors. Contact us now to restore safety, compliance and asset value.
Frequently Asked Questions
How long does it take for the joint sealing compound to cure?
Curing times vary by compound, temperature, and medium range. Most leak sealing compounds we use cure within minutes to a few hours, allowing systems to return to service quickly. We always provide measured curing data and advice specific to your leak and site.
What material can I use to seal water leaks?
For water leaks in pipes or structures, WRAS-approved injection sealant is recommended. These leak sealing compounds are suitable for potable water and offer excellent durability in a wide temperature range.
What is the best sealant for a high-pressure leak?
PTFE-based or polyurethane injection sealants are the best choices for high-pressure leaks, especially those compliant with WRAS and proven for oil, gas, and chemical exposure.
What is online leak sealing?
Online leak sealing is a process where leaks are sealed while the system remains live and under pressure. We use injection sealant to avoid shutdowns and reduce downtime for your business.
Is leak sealer a permanent fix?
If applied correctly by a qualified leak sealing team, using the right online leak sealing compound and curing method, leak sealers provide a robust, long-term fix suitable for most structures and pressure ranges.
