50% OFF*

LOCTITE® 518 is designed for use on rigid iron, aluminum, and steel flanged mating surfaces. Fills gaps up to 0.25mm and forms a flexible, chemical-resistant seal that will not tear or decay. Typical applications include sealing close fittings on transmissions, motor housings etc.

  • Fills Gaps upto 0.25mm
  • Better Flexibility
  • 150oC Service Temperature
  • Ideal for use on rigid metal parts, e.g. cast iron components and pump housings
  • High oil resistance
  • Excellent water and glycol resistance

*The minimum order quantity for this size should not be less than 10 items.

MRP Rs. 928.00/-
Discounted Price Rs. 464.00/-
Introductory offer on first order
  • 1-5 qty 50% off
    upto INR 1500
  • 6-10 qty 33% off
    upto INR 2500
  • 11-25 qty 25% off
    upto INR 4000
  • > 25 qty 10% off
Final discount applicable will be based on the total quantity in your cart.

Features and benefits

  • Prevents leakage: It fills all gaps between the mating flange parts and cures into a hard thermoset plastic that fills all surface irregularities providing 100% seal
  • Adapts to flange surface irregularities and scratches up to 0.25 mm
  • Eliminates gasket compression set
  • Reduces inventory cost and complexity as one tube can make many different shapes and sizes of gaskets
  • Provides instant seal


Tech specifications
Gap Fill Up to 0.25mm
Temperature Resistance (Continuous) 150oC
Cure Time 24 hours

Technical Documents

How To Videos

Step-by-step application


  We require a gasket that can withstand very high pressures. Can we use Loctite Gasketing solutions?

Yes, LOCTITE Anaerobic Gaskets can resist pressure upto 34.47 N/mm2.

  Our design uses the pre-cut gasket as a shim. Is there any way to use Loctite Gasket in case the gaps between the flanges are large?

Yes, in case the product design specifies the use of pre-cut gasket as a shim, LOCTITE Anaerobic Gasket Dressing can be used in conjugation with the pre-cut gasket. Just clean the flange surfaces and apply LOCTITE Anaerobic Gasket Dressing to both the sides of a fresh pre-cut gasket. Make sure to use a primer on both the sides of the pre-cut gasket before application of the Gasket Dressing.

  What type of materials can LOCTITE gasketing compounds be used on?

LOCTITE gasketing sealants can be used on many different materials including metals, wood, rubber, plastic, ceramics, glass and even concrete. The type of sealant selected for a specific application depends on the material to be sealed, environmental conditions, temperature and operating pressures in the system.

  There are some traces of the old gasket left on the parts. What can be used to remove them?

In order to remove any old gasket parts, you can use LOCTITE SF 790 Chisel Gasket Remover.

  We have to seal a fuel system. Would LOCTITE gasketing compounds be effective?

Yes. LOCTITE has two types of gasket technologies - one is anaerobic and the other is high performance Silicones. LOCTITE Anaerobic Gaskets are resistant to gasoline and Fuel oils. LOCTITE High Performance Silicones are 8 times more oil resistant than standard RTV silicones and hence perform well when used to seal hot oil systems like oil pans. They are both definitely superior to ordinary silicones as the latter swell and loose their sealing ability when used to seal fluid systems.

  How can we disassemble a part sealed with LOCTITE Gasketing Compound?

In order to disassemble the flanges sealed with LOCTITE Gasketing Compound, just use hand tools, and clean the flange surfaces with LOCTITE SF 790 Chisel Gasket Remover.

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