Precote 30 is the medium strength member of the Precote microencapsulated thread locker family. Where Precote 5 and 15 are non-reactive sealants that require no chemical activation, Precote 30 uses a microencapsulated acrylate system — the capsules are broken by thread engagement, the adhesive mixes, and the cure begins. This produces a stronger, more permanent lock-and-seal than the non-reactive grades.

The coating is dry to the touch on the fastener and inert in storage. Thread engagement at assembly breaks the microcapsules, releases the acrylate adhesive, and initiates room-temperature cure. The cured film locks the fastener against vibration loosening and seals the thread against fluid and gas migration up to 3600 psi. 8-hour full cure time at room temperature. The 4-year shelf life at room temperature applies to the dry pre-applied coating.

Precote 30 is not reusable. The microencapsulated acrylate cures into a structural element of the threaded joint. Disassembly requires overcoming the cured lock, and reinstallation requires reapplication — unlike the non-reactive Precote 5 and 15 which can be reassembled without reapplication. Specify Precote 30 for joints that will not require periodic disassembly.

Within the Precote locker family, medium strength (Precote 30) is the grade for applications requiring controlled lock-and-seal without the high breakaway torque of Precote 80 or 85. For high-strength locking and higher temperature capability (338°F vs 302°F), see Precote 80 (pink, fast-cure) or Precote 85 (turquoise, controlled torque tension).