Loctite 272 High Strength - High Temperature Threadlocker 50ml
Available
Loctite 272 is a one-component, red-orange, high strength anaerobic threadlocker (dimethacrylate ester). It is designed for the permanent locking and sealing of threaded fasteners; typical use is large bolts and studs, M25 and larger.
For heat, compressive shear strength of at least 20 N/mm² tested at 200 °C, after 24 hours at 22 °C plus 72 hours at 200 °C. Resistance up to 232 °C.
Where this product is used
- Permanent locking and sealing of large bolts and studs, M25 and larger
- Threaded fasteners that see elevated temperature, within the 200 °C test data
- Powertrain, chassis and electric motor assemblies
- Joints with large gaps, where an activator can be used to improve cure speed
Features
- High strength, for permanent locking and sealing
- Red-orange liquid (uncured), one component, no mixing
- Viscosity 4,000 to 15,000 mPa·s (Brookfield RVT, spindle 4, 20rpm)
- At least 14.5 N/mm² compressive shear after 24 hours at 22 °C
- At least 20 N/mm² compressive shear tested at 200 °C after heat conditioning
- Anaerobic cure, with an activator as a secondary cure
- Removable with localised heat to about 250 °C
Key specifications
| Specification | Detail |
|---|---|
| Brand | Loctite |
| Chemical type | Dimethacrylate ester (acrylic, anaerobic) |
| Colour | Red-orange liquid (uncured) |
| Strength class | High |
| Viscosity (Brookfield RVT, 25 °C, spindle 4, 20rpm) | 4,000 to 15,000 mPa·s |
| Specific gravity (25 °C) | 1.11 |
| Breakaway torque (M10 steel nuts and bolts, 24 h at 22 °C, ISO 10964) | 23 N·m |
| Prevail torque (M10 steel, 24 h at 22 °C) | 25 N·m |
| Breakaway torque (3/8 x 16 steel nuts, grade 2, and bolts, grade 5, 24 h at 22 °C) | At least 18 N·m |
| Compressive shear strength (steel pins and collars, 24 h at 22 °C, ISO 10123) | At least 14.5 N/mm² |
| Compressive shear strength (tested at 200 °C, after 24 h at 22 °C plus 72 h at 200 °C) | At least 20 N/mm² |
| Typical use | Large bolts and studs, M25 and larger |
| Heat resistance | Up to 232 °C |
| Storage | 8 °C to 21 °C, unopened, dry location |
Choosing the right option
For bolts and studs up to M25, see Loctite 271 High Strength Threadlocker 50ml or Loctite 262 Acrylic Anaerobic Threadlocker Red 50ml. For a lower strength grade see Loctite 243 Medium Strength Threadlocker.
Loctite 277 High Strength Threadlocker 50ml carries the same M25 and larger typical use as this product.
See also: Loctite 271 High Strength Threadlocker 50ml, Loctite 277 High Strength Threadlocker 50ml, Loctite 263 High Strength Threadlocker, Loctite 7471 Primer T Surface Preparation Activator Aerosol 133g.
Using it
To disassemble, apply localised heat to approximately 250 °C and disassemble while hot.
An activator can be used as a secondary cure, and can improve cure speed where the gap is large.
Cure speed depends on the materials, the gap and the temperature.
Its hot-strength graph covers 0 to 200 °C, shown as a percentage of the strength at 22 °C.
Storage and handling
Store unopened in a dry location. Temperature range 8 °C to 21 °C as the optimal range. Storage below 8 °C or above 28 °C can adversely affect the properties of the product.
Limits and safety
Use the hot-strength figures as a guide, and check your service conditions. Read the safety data sheet before use.
It is a one-component product that cures without air between close-fitting metal surfaces.
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Loctite 272 High Strength - High Temperature Threadlocker 50ml
SKU: A0049948 | Model: 272-50ML-LOC
Loctite 272-50ML-LOC: loctite 272 high strength threadlocker for M25 and larger bolts. Size: 50ml. Type: High strength threadlocker.