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Blue anaerobic gasket maker in a 10.14 fl oz cartridge

Loctite

Loctite 229501 Anaerobic Gasket Maker 10.14 fl oz Blue

SKU CH-4R5F-1MYVQ

Anaerobic gel sealant for metal flanges, fills gaps to 0.01 in and withstands -65 °F to 300 °F in a 10.14 fl oz cartridge

  • Anaerobic cure forms a reliable seal without air exposure
  • Withstands temperatures from -65 °F to 300 °F for extreme environments
  • Gel consistency fills gaps up to 0.01 in on metal surfaces
  • 1-hour working time allows precise assembly before full cure in 1 day
  • 14 fl oz cartridge delivers ample volume for multiple gasket applications

Loctite 229501 Anaerobic Gasket Maker 10.14 fl oz

Loctite 229501 is a blue anaerobic gel sealant supplied in a 10.14 fl oz cartridge. It is formulated for metal flanges and rigid assemblies where a formed-in-place gasket replaces conventional cut gaskets. The product suits maintenance technicians and engine builders who need a sealant that cures in the absence of air between close-fitting metal surfaces.

Cure behaviour under sustained load

The anaerobic cure mechanism activates only when the gel is confined between metal faces and excluded from oxygen. Full cure requires one day at room temperature, after which the seal maintains integrity across a continuous operating range of -65 Degrees F to 300 Degrees F. The material resists relaxation and leakage under prolonged thermal cycling and vibration because it remains a thermoset polymer once cross-linked, unlike non-curing pastes that can pump out over time.

Installation practicalities and common issues

The cartridge fits standard caulking guns for controlled dispensing onto clean, dry flanges. A working time of one hour allows assembly of large or complex housings before the gel begins to set. The maximum gap fill is 0.01 in, so surfaces must be flat and free of deep scratches or warpage; exceeding this gap prevents full cure and leads to weeping. Excess gel exposed to air will not harden and must be wiped away to avoid contamination of oil passages or coolant jackets.

Highlights

  • Anaerobic cure forms a reliable seal without air exposure
  • Withstands temperatures from -65 °F to 300 °F for extreme environments
  • Gel consistency fills gaps up to 0.01 in on metal surfaces
  • 1-hour working time allows precise assembly before full cure in 1 day
  • 14 fl oz cartridge delivers ample volume for multiple gasket applications

Specifications

BrandLOCTITE

Questions about this item

How much heat can the Loctite 229501 gasket maker withstand once the engine is running all day?

The anaerobic gel resists continuous temperatures up to 300 degrees F and stays flexible down to -65 degrees F.

What surface preparation or tools are needed before applying this 10.14 fl oz cartridge?

Clean metal flanges thoroughly, apply the blue gel from the cartridge, and assemble within the 1-hour working time; full cure takes one day.

Will the cured sealant hold a 0.01 in gap on older cast-iron or aluminium blocks?

Yes, the anaerobic formula is rated for a maximum gap fill of 0.01 in on metal surfaces including cast iron and aluminium.

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