COX EasiFlow HD Caulking Gun 310/400ml – Blue

The COX EasiFlow HD Caulking Gun is a professional manual applicator designed for the controlled dispensing of silicone, sealants, decorators’ caulk and compatible cartridge-applied adhesives.

Designed for both 310ml and 400ml rigid cartridges, this durable applicator features a smooth 7:1 mechanical advantage ratio and produces up to 1.2kN of thrust. It is particularly suitable for low-viscosity sealants and adhesives used during building, decorating, glazing and general maintenance work.

A built-in Pressure Relief Device automatically reduces pressure when the trigger is released. This helps stop material continuing to flow from the cartridge, reducing drips, product waste and mess between applications.

The blue frame and handle are manufactured from epoxy-coated steel for a strong yet lightweight construction. Zinc-finished sliding components and a curved rod end provide dependable everyday performance and convenient storage.

Key Features

• Professional single-component manual caulking gun
• Suitable for compatible 310ml and 400ml cartridges
• 7:1 mechanical advantage ratio
• Produces up to 1.2kN of thrust
• Built-in Pressure Relief Device
• Helps stop material flow when the trigger is released
• Suitable for low-viscosity sealants and adhesives
• Epoxy-coated steel frame and handle
• Lightweight and durable construction
• Curved rod end for convenient hanging and storage
• Distinctive blue professional finish
• Ideal for trade, workshop and maintenance use

Suitable Applications

• Applying silicone sealants
• Applying decorators’ caulk
• General-purpose joint sealing
• Window and door installation
• Kitchen and bathroom fitting
• Glazing and frame sealing
• Worktop and splashback installation
• Cabinet making and joinery
• Decorating and property maintenance
• Compatible cartridge-applied adhesives

Technical Specification

Pressure-Relief Operation

The built-in pressure-relief system helps stop the cartridge contents from continuing to flow when the trigger is released. This provides better control at the end of a bead and helps minimise drips, over-application and wasted material.

Cartridge Compatibility

The COX EasiFlow HD is designed for compatible 310ml and 400ml rigid cartridges. It is not an enclosed barrel applicator for unsupported foil or sausage packs.

This 7:1 model is intended primarily for low-viscosity products. For very thick or high-viscosity materials, a higher-thrust professional applicator may be required.

Frequently asked questions

What cartridge sizes does the gun accept?

It accepts compatible 310ml and 400ml rigid cartridges.

What is the mechanical advantage ratio?

The EasiFlow HD has a 7:1 mechanical advantage and produces up to 1.2kN of thrust.

How does the pressure-relief system work?

The device reduces pressure on the cartridge when the trigger is released, helping stop material from continuing to flow.

Is it suitable for thick adhesives?

It is intended primarily for low-viscosity sealants and adhesives. A higher-thrust gun may be preferable for very thick products.

Can it dispense foil sausage packs?

No. This model is intended for rigid cartridges. An enclosed barrel or combination gun is required for unsupported foil packs.

Is a cartridge included?

No. The applicator gun is supplied without sealant or adhesive cartridges.

Browse our complete selection of fillers, caulks and sealant accessories. Compatible sealants and adhesives are also available from our Sika Everbuild collection.