Sealing for the Long Haul: Protecting Joints Against the Elements and Time

  • Post last modified:November 20, 2025

For systems exposed to the rigors of the environment—including outdoor pipework, marine applications, process piping, and automotive fluids—the seal is under constant assault. When the sealant edges or joints get exposed, they can degrade or deteriorate over time due to:

  1. Chemical/Moisture Degradation: Exposure to humidity, aggressive cleaning solvents, or acidic rain can break down the sealant material, causing a slow, inevitable failure.
  2. Mechanical Abrasion: Moving parts, vibration, or even scraping against the exposed pipe/fitting can cause the sealant film to peel or crack at the edges, initiating a leak path.
  3. UV/Thermal Cycling: Sunlight and rapid temperature changes can accelerate the breakdown of conventional sealing materials.

Traditional, non-hardening pastes often shrink, crack, and wash out over time, while tape is easily damaged by abrasion. The solution requires a material that hardens into a durable, chemically resistant solid that is fully protected within the joint.

The Protective Power of Anaerobic Curing

The great advantage of a high-quality liquid anaerobic thread sealant is that it cures within the thread gap. The finished seal is physically protected by the metal threads themselves, leaving very little, if any, material exposed to the environment. The focus then shifts to the material’s cured chemical resistance.

To ensure longevity and resistance to degradation, the sealant must:

  • Be Highly Chemical Resistant: Impervious to fluids and environmental contaminants.
  • Form a Durable Solid: Cure into a strong, non-shrinking plastic.

Recommended Solution: Incure ProGrip™ 202 Refrigerant Thread Sealant

For the ultimate defense against degradation from exposure to elements, moisture, or chemical abrasion—where the seal must survive for years without maintenance—we recommend Incure ProGrip™ 202 Refrigerant Thread Sealant.

While specialized for HVAC, the core property of ProGrip™ 202 is its outstanding chemical resistance and stability, which makes it an ideal choice for any demanding environment.

Why ProGrip™ 202 Resists Degradation:

  1. Superior Chemical Compatibility: This sealant is specifically formulated to be stable and non-reactive with harsh chemicals, oils, and the various process fluids encountered in industrial settings. This extreme stability prevents the sealant from softening, swelling, or washing out when continually exposed to moisture or chemical fumes.
  2. Cures to a Durable Thermoset Plastic: Unlike non-hardening pastes, ProGrip™ 202 cures into a rigid, non-shrinking plastic. This cured material is highly resistant to physical abrasion and thermal cycling. The seal is fully contained within the thread envelope, where the metal shields it from UV and direct mechanical damage.
  3. Eliminates Exposed Material: By replacing bulky tape or excess paste, you eliminate the risk of the sealing material itself bulging or hanging out of the joint, where it could be picked at, degraded by cleaning agents, or damaged by scraping.

Ensuring Maximum Longevity and Resistance

To maximize the life of your seal and prevent early degradation:

  1. Prioritize Cleanliness: Always ensure threads are free of oil, paint, and rust. A perfectly clean metal surface allows ProGrip™ 202 to achieve its strongest possible chemical bond, which is key to long-term resistance.
  2. Clean Up Squeeze-Out: While minimal, any small amount of sealant that squeezes out of the joint should be wiped off before curing. This ensures no material is left externally exposed to be damaged by abrasion or solvents.
  3. Allow Full Cure: For systems that will face constant exposure and environmental stress, allowing the sealant its full cure time is essential. The final, hardened seal is the most resistant state and is your best defense against long-term deterioration.

By utilizing the extreme chemical stability and protected cure properties of Incure ProGrip™ 202, you ensure a seal that can withstand the test of time, chemistry, and the harsh elements.