Aircraft Fuel Tank Sealants

What Are Fuel Tank Sealants?

When constructing an aircraft fuel tank, there are microscopic seams from rivets and metal joints. Fuel tank sealers plug these gaps, so gas or jet fuel doesn’t seep out. They are formulated to adhere to materials commonly used when making aircraft fuel tanks, such as steel and aluminium. An aeroplane fuel tank seal also has excellent resistance to common aircraft oils and chemicals, extreme pressure, and a wide range of temperatures. For these reasons and others, some technicians coat the entire inner or outer tank with sealant for maximum protection.

High-Performance Fuel System Sealants

We offer an assortment of sealants that are tested and proven in aircraft worldwide. Shop for integral fuel tank sealant kits in many sizes along with rapid cure repair sealants, secondary fuel barrier coatings, potting and moulding compounds, and high-strength sealants. Most formulas will cure at room temperature for easy application with a brush, roller, or spray. For broader comparisons, browse our sealants range.

A real-time digital inventory management system lets you know what’s available, so you can get the right sealants for a task with same-day shipping. The knowledgeable support team at Silmid is here to answer any questions.

Aircraft Fuel Tank Sealant FAQs

Which sealant class should I choose for my aircraft fuel tank job?

Choose the class that matches the job requirements, then confirm that the product listing is intended for your aircraft fuel tank application. If an OEM callout or part number is part of the job, use that reference first.

How do I match a fuel tank sealant to an OEM spec or part number?

Compare the item name, manufacturer part number, and any specification notes shown on the product listing. The best fit is the one that matches the reference you are working from as closely as possible. If you are working to a Boeing or defence requirement, our guides on BMS vs MIL-SPEC specifications and MIL-PRF specifications explain how to verify the correct approval before ordering.

What do the product suffixes and cure-time differences mean?

They usually indicate a different kit size, working profile, or handling time. Check the product details carefully so you choose a version that gives you enough time for application and curing.