Amazon Basics Heavy Duty Sealant Caulking Gun - 310 ml (0.3 Litres) - 12:1 Thrust Ratio, Aluminium handle with plastic suppor
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
Amazon Basics Heavy Duty Sealant Caulking Gun - 310 is one of the 27 painting supplies, tools & wall treatment products in our catalogue, tracked on rating, review volume and live price. The maker describes it as follows: Heavy duty sealant caulking gun accommodates 310 ml cartridges; thrust ratio of 12:1. Coated metal; cartridges can rotate as needed thanks to the gun’s revolving steel frame. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.7 out of 5 from 5,187 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Amazon Basics
- Amazon rating
- 4.7 / 5 from 5,187 ratings
- vs Painting Supplies, Tools & Wall Treatment
- 0.2 above the category median of 4.5
- Rank in category
- 3 of 27 rated painting supplies, tools & wall treatment we track
- Price position
- Among the cheaper options (category spans £3.11 to £56.80)
- How proven
- Moderate review volume
How it compares in Painting Supplies, Tools & Wall Treatment
Across the 27 rated painting supplies, tools & wall treatment products we track, the typical score is 4.5 out of 5. This one sits at 4.7, which puts it in the upper quarter of the category rather than level with it. Where almost everything is rated well, the gap at the top is small in points and large in practice. That places it third of the 27 we rank here.
It carries 5,187 ratings against a category median of 7,320. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the lower third of a category running from £3.11 to £56.80, where the midpoint is about £9.99. Cheaper than most while rating at or above the category norm is the combination worth looking for, and it is the main argument for this one.
Worked out from the 27 painting supplies, tools & wall treatment products in our catalogue, not from the brand's own claims. How we rank →
Key features
- Heavy duty sealant caulking gun accommodates 310 ml cartridges; thrust ratio of 12:1
- Made of durable powder-coated metal; cartridges can rotate as needed thanks to the gun’s revolving steel frame
- Aluminium handle with plastic support grip and aluminium trigger; ergonomic rubber-coated handles allow for comfortable all-day use
- Silencing mechanism prevents squeaky noise when squeezing the trigger; drip-free mechanism retracts the pushing rod, which stops the flow of caulk
- Measures 36 x 18.8 x 5.72 cm (LxWxH)
- When the trigger becomes too hard to squeeze, the sealant inside may be dried. Do not forcibly squeeze the trigger and reload new sealant
