Silicone Gun – Which One to Choose for Your Workshop?
Silicone gun – a basic tool in the workshop
A silicone gun is one of those tools that belongs in the equipment of every professional workshop. It is used for the precise application of sealants, adhesives, silicones and other materials supplied in cartridges. With the right applicator the work is faster and the result neater and more durable.
In a workshop environment, where quality of workmanship and efficiency count, choosing the right gun is crucial. The models on the market differ in construction, operating mechanism and intended use, so it is worth getting to know their characteristics before you buy.
Types of silicone gun
Manual skeleton guns
The most popular type is the skeleton gun, characterised by its simple construction and low price. It consists of a metal frame, a piston rod and a squeeze lever. This model is suited to occasional jobs and smaller volumes of material. It is light and easy to use, although it takes more force to dispense thicker compounds.
Skeleton guns are ideal for maintenance work, minor repairs and sealing. Their main advantage is versatility – they fit standard 310 ml cartridges. Look out for a release mechanism, which prevents silicone from running on uncontrollably once you have finished.
Closed (barrel) guns
The closed version has a metal barrel into which the silicone cartridge is placed. This type of gun gives better stability and more precise dispensing. It is slightly more expensive than skeleton models, but offers greater durability and ease of use.
In a workshop where comfort during long periods of work matters, closed guns perform very well. The additional housing protects the cartridge from damage and applies even pressure to the piston, which results in a more consistent bead of material.
Pneumatic guns
For professionals carrying out large volumes of sealing work, pneumatic guns are the best choice. Powered by compressed air, they eliminate the need to squeeze by hand, which significantly reduces fatigue during many hours of work.
Pneumatic guns offer excellent precision and adjustable dispensing force. They are invaluable in series production, in assembling components that require sealing, and wherever repeatability and speed are critical.
Cordless guns
Modern cordless guns combine mobility with dispensing power. Powered by a lithium-ion battery, they offer the comfort of working without cables or air hoses. They are an excellent solution for mobile workshops and places where access to a power supply is limited.
Cordless models are often equipped with electronic adjustment of dispensing force and automatic flow stop, which minimises material waste and ensures a professional finish.
Key parameters when choosing a silicone gun
Type of dispensing mechanism
The dispensing mechanism determines how much force is needed to work effectively. Guns with a 10:1 thrust ratio require more pressure but are cheaper. Models with an 18:1 or 26:1 ratio significantly reduce effort, which is essential when working with thick adhesives or assembly compounds.
Build material
A silicone gun should be made from durable materials – ideally steel or reinforced aluminium. Plastic parts may appear in the handles for added comfort, but the main structural components must withstand prolonged loads.
Release mechanism
A professional gun must have a reliable pressure release mechanism that stops the flow of silicone immediately when you let go of the lever. This eliminates unsightly dripping and wasted material, which matters particularly for finishing work.
Compatibility with different cartridges
Most guns are designed for 310 ml cartridges, but in a workshop universal models that handle different capacities – from 300 to 600 ml – also come in useful. Some versions can also work with foil sachets, which makes the tool more versatile.
Using a silicone gun in the workshop
In a professional workshop a silicone gun is used in many areas. It is used for sealing joints, applying structural adhesives, filling gaps and applying repair compounds. It is essential for fitting glass components, sealing cabins, installing sanitary fittings and repairing bodywork.
Thanks to precise dispensing, you can produce clean, even joints without the need for additional smoothing. This saves time and material, which in professional use translates directly into the profitability of the work.
Practical tips for use
Preparing the tool for work
Before starting work, check the condition of the mechanism and clean the piston rod. Install the silicone cartridge correctly, cutting the tip at an angle of 45 degrees. Squeeze out the first portion onto waste material to remove any contamination.
Silicone application technique
While working, guide the gun evenly at a constant angle to the surface. Continuous, steady pressure on the lever ensures a uniform bead thickness. When you have finished, release the mechanism immediately to stop the flow of material.
Maintenance and storage
After finishing work, clean any remaining silicone off the gun, especially the piston rod and the release mechanism. The tool should be stored in a dry place. Regular lubrication of moving parts extends the life of the gun and keeps it running smoothly.
Silicone gun – an investment in quality of work
When choosing a silicone gun for your workshop, look at the durability of its construction, working comfort and suitability for the kind of tasks you carry out. For occasional users a solid manual model is enough, while professionals should consider pneumatic or cordless options, which significantly boost working efficiency.
A high-quality silicone gun is an investment that pays for itself quickly through material savings, shorter working times and better-quality seals. Every professional workshop should have room for this versatile tool.