If you’ve ever felt a threaded connection become excessively tight halfway through assembly, or worse, witnessed cross-threading because the joint wouldn’t seat properly, the culprit is often too much bulk from your sealant.

This common problem—excessive sealant or tape making threads too bulky—prevents full thread engagement.When threads don’t engage completely, the mechanical strength of the joint is compromised, and you’re left with a weak,unreliable seal that will inevitably leak under pressure or vibration.

The Bulky Seal Problem: Engagement Failure

A successful pipe seal relies on two things: the mechanical integrity of the threads and the chemical seal filling the gaps.When conventional sealants add too much bulk, the mechanical integrity is sacrificed:

1. Thread Interference: A thick layer of paste or too many layers of PTFE tape effectively changes the geometry of the male thread, making it wider. This physically prevents the male and female threads from meshing deeply,limiting engagement to only a few turns.
2. False Torque Reading: The added bulk creates high friction early in the tightening process. You feel the required torque prematurely, leading you to believe the joint is tight when, in fact, the threads haven’t fully seated, leaving large leak paths deep in the joint.
3. Cross-Threading: In extreme cases, the sealant pushes the threads out of alignment, causing damage to the thread crests and roots—a permanent and often irreversible failure.

The Solution: Anaerobic Sealants

High-performance anaerobic sealants, being liquids, provide the solution because they fill volume (the thread gaps) without adding bulk (material thickness that interferes with fitting engagement).

• Liquid Application: Anaerobic liquids are low-viscosity, allowing the male and female threads to slide past the material and achieve maximum thread engagement.
  
• Cures in the Gaps: The liquid is pushed out of the load-bearing flanks of the threads, only curing in the microscopic gaps where it’s needed, thus maintaining the designed mechanical connection.
  
• Controlled Film Thickness: Unlike paste or tape, the final cured sealant forms a thin, precise film, ensuring full mechanical engagement is achieved before the final seal is created.

Incure ProGrip™ 209 Hydraulic & Pneumatic Thread Sealant

For systems like hydraulic and pneumatic lines that require perfect thread engagement to withstand high pressure without introducing contaminants, we recommend Incure ProGrip™ 209 Hydraulic & Pneumatic Thread Sealant.

Why ProGrip™ 209 Offers Precision Sealing:

• Medium Viscosity, Controlled Flow: ProGrip™ 209 has an ideal medium viscosity. It flows easily to coat the threads but is thick enough to stay put during assembly. This formulation ensures it fills the micro-gaps without creating the excessive bulk that leads to poor engagement.
• Non-Contaminating (Hydraulic Safe): Specifically designed for critical fluid systems, this product is formulated to cure without shredding or flaking, ensuring no cured or uncured material enters the fluid stream to clog valves or filters—a common problem with tape or old-style pipe dope.
• Medium Strength, High Reliability: It provides a reliable, high-pressure seal that resists vibration and shock,while remaining serviceable (removable with hand tools) for maintenance, balancing maximum engagement with functional strength.

ProGrip™ 209 helps you achieve a full mechanical joint before the liquid turns into the secure, leak-proof plastic seal.

Precision Application: Sealing Without Bulk

Switching to a liquid anaerobic sealant requires a change in mindset: you are no longer trying to “stuff” the threads but to coat them.

1. Clean Threads: Always start with threads completely free of oil, grease, or old tape. Clean threads are crucial for both proper engagement and proper sealant cure.
   
2. Apply to the Male Thread: Apply a continuous, thin bead of ProGrip™ 209 around the circumference of the male thread.
   
3. Skip the First Thread: Begin the application one to two threads back from the leading edge. This prevents excess material from being pushed into the system during tightening.
   
4. Tighten Fully: Assemble the connection. The liquid sealant will allow the threads to engage fully and smoothly,allowing you to reach the manufacturer’s specified torque without premature resistance from excessive bulk.
   
5. Cure: Allow the recommended time (typically 24 hours) for the sealant to fully cure into a solid seal before subjecting the system to operating pressure.