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LOCTITE 278/50ML – High Strength Oil Tolerant Threadlock

Part Number: LOCTITE 278/50ML
Race Category
Product Category
Adhesives & Abrasives

Loctite 278/50ml – High Strength Oil Tolerant Threadlock

Loctite 278 High Strength, high temperature Threadlocker.

Loctite 278 is designed for the permanent locking and sealing of threaded fasteners. The product cures when confined in the absence of air between close fitting metal surfaces and prevents loosening and leakage from shock and vibration. Particularly suitable for applications on less active substrates such as coated or plated surfaces, and/or for applications where temperature resistance is required.

Product Description

Technology: Acrylic
Chemical Type: Dimethacrylate ester
Appearance (uncured): Green liquid
Fluorescence: Positive under UV light
Components: One component: Requires no mixing
Viscosity: Medium
Cure: Anaerobic
Secondary Cure: Activator
Application: Threadlocking
Strength: High

Typical Curing Performance

Cure Speed vs. Substrate
The rate of cure will depend on the substrate used. The graph below shows the shear strength developed with time on M10 steel nuts and bolts compared to different materials and tested according to ISO 10964.

Cure Speed vs. Bond Gap
The rate of cure will depend on the bondline gap. Gaps in threaded fasteners depends on thread type, quality and size. The following graph shows shear strength developed with time on steel pins and collars at different controlled gaps and tested according to ISO 10123.

Typical Properties of Uncured Material
Specific Gravity @ 25°C: 1.08
Viscosity, Brookfield – RVT, 25°C, mPa·s (cP):
–Spindle 6, speed 100 rpm: 2,400 to 3,600

Typical Performance of Cured Material
Adhesive Properties:

After 24 hours @ 22°C
Breakaway Torque, ISO 10964:
M10 black oxide steel nuts and bolts: (unseated) N·m 42 ( (372)

Prevail Torque, ISO 10964:
M10 black oxide steel nuts and bolts (unseated): N·m 23 ( (203)

Compressive Shear Strength, ISO 10123:
Steel pins and collars (degreased): N/mm² ≥15 (psi) (2,175)

After 48 @ 22°C
Breakaway Torque, ISO 10964:
M10 zinc phosphate steel nuts and bolts (seated) and pre-torqued to 5 N.m: N·m ≥38 ( (≥336)

Please store this product in the unopened container in a dry location.
Further storage information may be indicated on the product container labeling.

Optimal Storage: 8°C to 21°C. Storage below 8°C or greater than 28°C can adversely affect product properties.

General information
This product is not recommended for use in pure oxygen and/or oxygen rich systems and should not be selected as a sealant for chlorine or other strong oxidizing materials.

Not sure if this product is right for you?
If you are not sure if this battery is right for your requirements, please contact our friendly sales team and they will be able to help you.

  • Pack sizes: 50ml
  • 250ml "
  • Service temperature range: -55°C - +200°C
  • Strength: High
  • Maximum thread size: Up to M36
  • Fixture time steel: 20 min.
  • Fixture time brass: 20 min.
  • Fixture time stainless steel: 60 min.
  • Breakaway torque M10 bolts: 42Nm

£26.77Each (exc VAT)

In Stock