IZOPLET
Sewn Sleeves
Sewn Sleeves for Easy Installation and Unlimited Diameters
Sewn thermal sleeves are designed for applications where conventional braided sleeves fall short — such as large, irregular, or permanently installed components. Thanks to their open structure, they can be quickly wrapped around cables, hoses, or pipe assemblies without disassembly. This makes them an ideal choice for thermal protection in retrofit projects, maintenance work, and hard-to-access areas. Custom sizing allows for virtually unlimited diameters, and various fasteners (Velcro, zippers, buttons) provide secure closure even under demanding industrial conditions.
SEWN SLEEVES - Product Line
IZOPLET sewn sleeves are made from heat-resistant IZOLTEX fabrics — either uncoated or with protective coatings such as silicone or aluminum foil. The choice of material depends on the operating conditions, including temperature range, exposure to aggressive environments, and requirements for water or oil resistance.
Structurally, the sleeves have a longitudinal opening and are closed using one of two fastening types: with Velcro and Metal Hooks.
SEWN SLEEVE WITH VELCRO
Removable thermal protection sleeves with Velcro closures are designed for quick and convenient installation without the need to disconnect or dismantle cables, hoses, pipelines, or other components. This construction is especially useful when working with existing equipment where access to protected elements is limited.
Velcro-closure sleeves are widely used in situations requiring temporary or emergency protection — such as sudden temperature spikes, accidental splashes of molten metal, exposure to hot gases, or contact with heated surfaces. They can be easily applied, removed, or replaced on-site without interrupting operations. This makes them an ideal solution for facilities where fast response to thermal hazards is essential to prevent equipment damage and minimize downtime.
Choosing the Right Velcro for High-Temperature Sleeves
When designing thermal protection sleeves, we pay close attention to every component — and the choice of Velcro fasteners is no exception. We offer a wide range of Velcro options, from standard polyester and nylon types to high-performance versions made from flame-resistant nylon, PPS (polyphenylene sulfide), or even stainless steel elements.
Material Type
Temperature
CT | ST
Application & Features
Standard Type
Nylon/Polyester
+90 | –
General purpose, not for high temperatures. Included for comparison.
FR Nylon
+140 | +180
Enhanced safety, prevents fire spread.
Nomex + Nylon
+175 | +260
Aviation, industrial insulation, where high heat resistance and lightweight are required.
PPS + Polyester
+250 | +250
High heat resistance, chemical resistance.
Stainless Steel
+430 | +800
Extremely high temperatures, industrial furnaces, fire fighting equipment. Very durable.
Abbreviations and Units
Temperature:
CT – Continuous temperature resistance (°C)
ST – Short-term temperature resistance (°C)
SEWN SLEEVE WITH METAL HOOKS
This design is intended for continuous operation under high-temperature conditions. Metal fasteners maintain their integrity even during prolonged exposure to extreme heat, making this type of sleeve ideal for long-term equipment protection in metallurgy, power generation, and other demanding industrial environments. In such cases, the thermal resistance of the sleeve is determined not by the fasteners, but by the properties of the base material used.
Choosing the Right Sleeve Material
Selecting the appropriate base material for a sewn sleeve is a crucial step that directly impacts the effectiveness and durability of thermal protection. Depending on the application, various fibers can be used — including glass, basalt, ceramic, high-silica, and others. Each material offers specific advantages in terms of temperature resistance, flexibility, mechanical strength, and cost.
To help you navigate these options, we’ve included a temperature comparison chart alongside this block. If you’re unsure which material to choose, simply follow the button below — it will take you to a dedicated page with detailed descriptions and side-by-side comparisons.
If you’re uncertain whether your application requires an additional coating, such as high-temperature silicone, please visit the Covered Sleeves section for more information. That page explains when and why coated sleeves are recommended.
Technical specifications are for reference only. Actual performance may vary depending on chemical exposure, temperature shocks, and mechanical loads such as compression or friction. Values are based on ideal lab conditions — always assess real application factors before use.
How to Place an Order
To ensure we process your order quickly and accurately, please provide the following information:
Sleeve type (product name or code)
Inner diameter
- Outer diameter (if necessary)
Cut length (if needed)
Quantity
Understanding the Product Code
Each sewn sleeve has a unique product code that reflects its key design parameters — including the base material, closure type, and optional coating. This code allows for quick identification and helps ensure you select the configuration best suited to your application.
Sample: IZOPLET-50SV-20 | Insulation Sveeve IZOPLET; Coated with Silicone; Velcro Fastener; Cross-Section Diameter 20 mm
