When a retaining compound cures, it forms a solid polymer. If that polymer is too brittle or the compound’s ultimate shear strength is insufficient, the bond can fail under severe mechanical shock, repeated impact, or high cyclic loading. This failure often manifests as a sudden slip, a catastrophic loosening of parts, or the irritating creak of a press-fit component (like a BB) shifting under power.
The problem isn’t the component; it’s selecting a compound that lacks the tensile toughness and maximum strengthrequired for extreme conditions.
The Solution: Maximum Strength and High Shear Resistance
To ensure the bond survives constant stress, vibration, and peak shock loads, you need a compound with the absolute highest possible shear strength and superior performance on worn or high-tolerance parts.
Incure WeldLock™ 330 Green Retaining Compound
For industrial applications, competitive cycling, or any heavy-duty assembly where the risk of bond failure under mechanical shock or high cycling load is unacceptable, we recommend the Incure WeldLock™ 330 Green Retaining Compound.
This product is an ultra-high-strength compound formulated to provide a permanent, non-brittle, structural lock that withstands the most demanding operating environments.
| Key Feature | Benefit for Resistance to Shock and Cycling |
| Exceptional Strength (25 N/mm2) | The maximum shear strength rating ensures the bond is the last thing to fail, creating a structural lock capable of handling repeated, heavy stress cycles. |
| Excellent Gap Fill (0.26mm) | Effectively fills all voids and irregularities, distributing the load across the entire joint area, which prevents stress concentration points where brittle failure starts. |
| High Viscosity (2500 MPa⋅s) | The robust formula ensures a dense, complete cure, resulting in a tough polymer that resists fracturing under impact better than thinner, weaker compounds. |
| Fast Fixture Time (5 minutes) | The rapid set minimizes the chance of initial movement, ensuring the final, permanent bond cures perfectly centered and stress-free. |
WeldLock™ 330 is your safeguard against mechanical failure, turning loose-fitting or high-stress assemblies into a single, permanent, and unified structure.
Preventing Bond Brittle Failure: Beyond the Compound
Even with the highest strength compound, technique matters when dealing with stress:
- Thorough Cleaning: Any residual oil or dirt will create a weak layer that is brittle and prone to failure. Ensure surfaces are vigorously cleaned to allow WeldLock™ 330 to bond directly to the metal.
- Allow Full Cure: While WeldLock™ 330 fixtures in 5 minutes, its maximum, shock-resistant strength is only achieved after the full 24-hour cure period at room temperature. Do not subject the assembly to high loads until this time has elapsed.
- Check Tolerances: For applications with very large clearances, even the best compound can be strained. If the gap is near or exceeds 0.26mm, consider pairing the compound with a sleeve or bushing to bring the tolerance into the optimal range for the adhesive.
Ensure Permanent, Shock-Resistant Retention with Incure WeldLock™ 330 Green Retaining Compound