PPG® PR-1776M B-1/2 Boeing BMS 5-45H Class B-1/2 Spec Low Weight Fuel Tank Sealant - 6 oz (654) Semkit

When it comes to fuel tank repairs, precision and reliability are non-negotiable, which is why SkyGeek offers PPG® PR-1776M B-1/2 Fuel Tank Sealant. Engineered to meet Boeing’s BMS 5-45H Class B-1/2 specification, this lightweight fuel tank sealant packs a serious punch in a small six-ounce 654-SemKit. Whether you're working in a hangar or doing quick repairs in the field, this sealant is designed to handle tough aviation environments without breaking a sweat. Plus, because the sealant is lightweight, you won’t be adding unnecessary bulk to your aircraft by just fixing a leak.

PPG® PR-1776M B-1/2 Fuel Tank Sealant is thixotropic to make application smooth and easy, especially on vertical and overhead surfaces where gravity is not your friend. The sealant won’t sag, slip or run, sealing virtually any surface in any orientation. The brown color might not win style points, but once it’s cured, you’ll forget it’s even there — until you realize your tank’s been bone dry for weeks. With a work life of about 30 minutes and a cure time that’s fast, but not so fast that you’d question the quality, this powerful fuel tank sealant will have you back up and in the air in no time.

Use PPG® PR-1776M B-1/2 Fuel Tank Sealant on aluminum, stainless steel and other common aircraft substrates. The sealant provides a fuel-resistant, flexible seal that stands up to jet fuel, aviation gasoline and occasional exposure to hydraulic fluids or other aviation chemicals. The low density reduces added weight in fuel tank areas, giving you more freedom to optimize performance without sacrificing durability.

Whether you're patching up after a fuel leak or building something new from the ground up, PPG® PR-1776M B-1/2 Fuel Tank Sealant from SkyGeek is the go-to choice for reliable, long-lasting seals.