CHT Group QSil DBT Catalyst, 4 oz Bottle

Description

The QSil DBT catalyst from CHT Group is a dibutyltin dilaurate (DBT) cure catalyst used with two-part QSil silicone potting and encapsulating compounds. A small percentage of catalyst added to the base silicone triggers room-temperature crosslinking and lets you control working time and final cure profile.

How the QSil DBT catalyst works

DBT is the industry-standard tin catalyst for condensation-cure silicone systems. The catalyst pulls moisture or hydroxyl groups into the reaction and builds a crosslinked elastomer at ambient temperature without an oven. Working time depends on the mix ratio, ambient humidity, and substrate prep, so dial the loading to match the assembly window your production line needs.

Where the QSil DBT catalyst fits

Electronic potting, sensor encapsulation, transformer impregnation, vibration-damping pads, and gasket bonding are typical end uses across automotive, aerospace, and industrial assembly lines. The light yellow color stays clear in the cured silicone, so optical inspection of potted assemblies is straightforward. The 4 oz bottle suits low-to-medium production runs paired with a 1 to 5 pound base silicone shipment, and the size also works well for prototype builds before scaling to drum quantities.

Handling and storage

Wear gloves and eye protection when handling DBT catalysts and follow your facility’s safety data sheet protocols. Keep the bottle tightly capped between pours and store it cool and dry, away from solvents and acidic materials that can degrade tin compounds. Weigh out the catalyst on a calibrated scale rather than estimating the ratio. Off-ratio mixing is the most common cause of soft or undercured silicone pours and inconsistent batch-to-batch performance on production lines.

Need help selecting the matched QSil base silicone for your application, sizing a bulk order, or troubleshooting an off-spec cure result? Our adhesives team can spec the compatible CHT Group silicone and confirm cure schedules for your shop. Call (800) 220-1966 or email [email protected]. Compare other encapsulants and potting compounds, or visit CHT Group for upstream technical data.