We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Blue 50 ml threadlocker bottle with white cap and nozzle

EPASUN Threadlocker M243 50ml Medium Strength Sealer

SKU CH-BRXJ-4FJKB

Medium-strength blue threadlocker secures nuts and bolts against vibration, resists water and rust, cures initially in 10 minutes and fully in 24 hours, removable with hand tools

  • FeaturesLeak Resistant, Rust Resistant, Corrosion Resistant, Replace
  • Medium strength M243 prevents vibration loosening
  • Removable with basic hand tools after curing
  • 50 ml bottle resists drying out for long storage
  • Initial cure in 10 minutes, full cure in 24 hours
  • Waterproof and rust-resistant for indoor and outdoor use

EPASUN Threadlocker M243 50ml

EPASUN Threadlocker M243 is a medium-strength blue adhesive supplied in a 50 ml bottle. It is designed for mechanics, technicians and DIY users who need to secure threaded fasteners against vibration loosening. The formula replaces traditional lock nuts and washers on metal assemblies. It suits automotive, industrial and furniture repair tasks.

Fits into maintenance workflows

The threadlocker applies directly to bolt or nut threads before assembly. Initial cure occurs in 10 minutes, allowing the joint to be handled, while full cure completes in 24 hours. It eliminates the need for separate locking hardware such as washers or nylon-insert nuts. Disassembly is possible with basic hand tools when required.

Sustained load behaviour

The cured adhesive resists leakage, corrosion and rust in indoor and outdoor environments. It maintains clamping force on fasteners subjected to continuous vibration and thermal cycling. Full structural integrity is reached after the 24-hour cure period, after which the joint remains tight under prolonged operational stress.

Highlights

  • Medium strength M243 prevents vibration loosening
  • Removable with basic hand tools after curing
  • 50 ml bottle resists drying out for long storage
  • Initial cure in 10 minutes, full cure in 24 hours
  • Waterproof and rust-resistant for indoor and outdoor use

Specifications

BrandEPASUN
FeaturesLeak Resistant, Rust Resistant, Corrosion Resistant, Replaces Lock Nuts and Washers

Questions about this item

How long before the M243 reaches full cure so the joint can handle sustained vibration?

The threadlocker cures initially in 10 minutes and reaches full cure after 24 hours, after which fasteners stay tight under continuous vibration.

Does the cured adhesive soften or leak when the assembly runs hot all day?

It is heat-resistant and waterproof, so the bond remains consistent and leak-free during extended high-temperature operation.

What size fasteners can the 50 ml bottle of M243 typically cover?

The 50 ml volume suits a wide range of nuts, bolts and metal fasteners across automotive, industrial and furniture jobs.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.