Faithfull Heavy-Duty Mastic Gun – 425ml

The Faithfull Heavy-Duty Mastic Gun 425ml is engineered for professional tradespeople and DIY users who demand strength, control, and comfort when applying sealants and adhesives. Constructed from heavier gauge steel throughout, this applicator ensures durability and precision, even under tough site conditions.

Designed with ribbed finger grips on the enlarged handle, this gun delivers superior comfort and control through 360° use, reducing fatigue during repetitive applications. The ratchet system features a double spring mechanism that provides smooth, accurate sealant feed with each trigger pull and an instant return upon release – ensuring minimal waste and maximum efficiency.

A handy nozzle cleaning pin is integrated into the handle, making maintenance quick and simple. This gun accepts all standard adhesive and sealant cartridges up to 425ml, making it a versatile choice for construction, decorating, and repair work.

Key Features

✔ Heavy-Duty Build – Heavier gauge steel provides long-lasting strength and reliability.
✔ Enhanced Comfort – Ribbed finger grips on a larger handle reduce user fatigue.
✔ Precise Application – Double spring ratchet system ensures smooth, positive sealant feed.
✔ Nozzle Cleaning Pin – Built-in cleaning pin on handle for quick maintenance.
✔ Universal Fit – Accepts all standard adhesive and sealant cartridges up to 425ml.

Technical Specifications