One of the biggest concerns with high-performance anaerobic sealants is their sheer strength. While they create a perfect, leak-proof seal, they can indeed “glue” parts together so well that future maintenance becomes a headache, requiring extreme force or even damaging softer flange materials during disassembly.
The key to preventing this issue lies in choosing the correct sealant strength and formulation for joints that require regular servicing.
The Disassembly Dilemma: Strength vs. Serviceability
Anaerobic flange sealants are available in varying strengths. A high-strength sealant is ideal for permanent assemblies where high-temperature or high-pressure resistance is critical. However, for components that see periodic maintenance (like pump housings, thermostat necks, or transmission pans), you need a flexible, medium-strength product that provides a robust seal but can be separated with hand tools.
The Solution: Opt for a Flexible, Service-Friendly Formula
For general-purpose flange sealing where future disassembly is a requirement, you should choose a product specifically designed to balance sealing power with serviceability.
We recommend the Incure HeatGrip™ 504 Flexible General Purpose Gasket Sealant for this balance.
| Product | Compressive Strength | Disassembly Feature | Best For |
| HeatGrip™ 504 | 5.2 N/mm2 | Medium Strength: Separable with common hand tools and minimal force. | General service applications (steel, iron) where regular maintenance is anticipated. |
| HeatGrip™ 508 | 7.8 N/mm2 | Easy Disassembly: Specifically formulated for easier break-loose force on softer metals. | Aluminum flanges or any component where flange protection during service is paramount. |
Why HeatGrip™ 504 Works for Serviceable Joints:
- Medium Strength Bond: The 504 is formulated to provide an excellent, high-pressure seal (5.2 N/mm2) but is not an ultra-high-strength “permanent” adhesive. This makes the bond separable using standard disassembly techniques.
- Flexible Layer: It cures into a flexible polymer. When separating the flanges, this material is less brittle than rigid formulations, making it easier to break the seal without chipping or excessive scraping.
- Worry-Free Reassembly: After separation, the cured 504 is easier to scrape and clean from the flange face, preparing it for the next application.
The Professional Disassembly Technique
When the time comes to service the component sealed with HeatGrip 504, follow these steps:
- Remove Fasteners: Unscrew all bolts and fasteners.
- Apply Tapping Force: Use a soft-face mallet to gently tap the side of the flange joint. The sudden vibration and impact often create a “shock break” that initiates the separation of the bond.
- Use a Break Point: If a break point or pry slot is available on the flange, use a dedicated, blunt-edge plastic or brass wedge to pry the parts apart. Never use a steel screwdriver to pry, as this will gouge and permanently damage the precision flange face.
- Clean Up: Once separated, the cured 504 can be removed more easily than high-strength alternatives using a plastic scraper or a chemical solvent.
Choose the HeatGrip 504 for its reliable seal and medium strength, ensuring your components are secured against leaks today, but remain accessible for maintenance tomorrow.