Live leak sealing solutions engineered to safely contain leaks without interrupting operations.
MOSS delivers specialist leak sealing, engineered solutions including mechanical connectors, hot tapping and line stopping, and composite repair services designed to maintain asset integrity and minimise operational disruption. Combining practical engineering expertise with innovative repair methods and rapid-response support, we provide safe, efficient, and cost-effective solutions for complex maintenance and integrity challenges across critical onshore and offshore operations.
MOSS provides custom-engineered leak sealing solutions that address both routine maintenance requirements and complex, high-risk scenarios. Each solution is designed to meet the specific technical demands of the system, ensuring safety, reliability, and operational continuity.
Our engineered capabilities include:
• Flange Clamps - Precision-designed to contain and control flange joint leaks without the need for a system shutdown, helping maintain productivity while preventing fluid loss and environmental risk.
• Pipeline Clamps -Engineered to perform under high-pressure and high-temperature conditions, these clamps provide secure, durable repairs that extend the safe operation of critical pipelines.
• Bespoke Fabrications - Developed for non-standard geometries, restricted access areas, and highly challenging environments. Each fabrication is custom-built to deliver a precise fit and long-term containment, where standard solutions cannot be applied.
Our engineered solutions can be deployed rapidly, provide reliable containment with minimal disruption to ongoing operations, and ensure compliance with safety and environmental standards.
MOSS delivers fast-response craft repairs carried out by skilled technicians on-site. These interventions are designed to quickly stabilise leaks, reduce immediate risks, and keep systems operational until a permanent solution can be installed.
Our repair services include:
• Flange - Containment solutions for leaks in bolted joints systems using a range of techniques dependent on the flange geometry and leak-severity.
• Valve Repair – Injection methods for a range of valve issues including gland leak, bonnet joint, and valve seats using sealants best suited to the defect type.
• Temporary Patches - Applied to non-critical leaks, these solutions ensure continued system operation, safeguard personnel, and mitigate escalation risks.
Our craft repair service provides immediate intervention to minimise downtime, enables safe and controlled repairs under pressure without system isolation, and offers critical support in high-risk environments where delays could compromise productivity or safety.
Composite Repairs enable efficient repairs to a range of defects. Engineered in accordance with industry standards, composite repairs can restore both structural integrity and stop leaks.
MOSS are the perfect Composite Repair contractor offering the combined benefit of live leak-sealing experience, mechanical and composite methods to offer the best repair solution.
All repairs are engineered and complemented with a full design, installation documentation and repair record for lifetime records.
MOSS offer live hot tapping & line stopping services on a range of pressures, temperatures and line contents. These services are typically requested for intervention requirements such as piping modifications and decommissioning activities when traditional isolation methods are not practical.
MOSS are able to offer a range of Mechanical Connectors including Quickflange™ and Lokring in addition to in-house custom solutions based on our Mechanical Clamp technology. Our Mechanical Connector offerings are complemented by our ability to provide a turnkey solution complete with pipe cutting, pressure testing, and bolting services.
