Loctite 515 Anaerobic Gasket Maker | (50mL) Tube | Engine Crankcase Sealant

Loctite® 515 Anaerobic Gasket Maker is a premium flange sealant designed to create reliable, leak-proof seals between rigid machined metal flanges. Curing only in the absence of air between close-fitting metal surfaces, Loctite 515 forms a durable, flexible gasket that resists engine oil, and vibration.

Widely used in aircraft engine assembly, Loctite 515 is a trusted choice for Continental and Lycoming engine crankcase halves and other rigid flange applications when used in accordance with the applicable manufacturer's overhaul manual and service instructions. Its anaerobic formula remains liquid until assembly, preventing premature curing while eliminating the need for pre-cut paper or cork gaskets.

Perfect for aircraft maintenance, airboat engine rebuilds, automotive, marine, and industrial applications, Loctite 515 provides long-lasting sealing performance while helping prevent leaks in demanding operating environments.

Features

• Creates durable, leak-proof seals on rigid machined metal flanges
• Anaerobic formula cures only between assembled metal surfaces
• Excellent resistance to engine oil, fuel, coolant, and transmission fluids
• Eliminates the need for conventional paper or cork gaskets
• Flexible after curing to withstand vibration and thermal cycling
• Ideal for aluminum, cast iron, and steel flanges
• OEM-trusted sealing technology
• Easy-to-apply 1.69 fl oz (50 mL) tube

Common Applications

• Aircraft engine crankcase halves*
• Accessory case flanges*

*Always follow the applicable Continental or Lycoming overhaul manual and service instructions for approved sealants and installation procedures.

Specifications

• Manufacturer: Loctite
• Manufacturer Part Number: 135479
• Product: 515 Anaerobic Gasket Maker
• Color: Purple
• Size: 1.69 fl oz (50 mL)
• Package: Tube
• Type: Anaerobic Flange Sealant