Cartridge Caulking Guns
JS-8604 9 inch cartridge silicone sealant gun caulking gun
The volume model of the cartridge range and the one most buyers compare everything else against.
Product Overview
The volume model of the cartridge range and the one most buyers compare everything else against. A four-point welded steel frame front and rear, an aluminium alloy handle, 120 KG push force with 150 KG tolerance at 18:1, at 398-400 g. Available chrome plated as well as in colour.
Key benefits
Why Buyers Choose This Model
Four-Point Welded Frame
Welded at four points front and rear rather than clipped or riveted. That construction is what gives the 150 KG tolerance against a 120 KG working force, a 25 percent margin.
Aluminium Alloy Handle
Lighter than a steel handle and stiffer than plastic, so the gun stays at 400 g without giving up rigidity where the operator grips it.
Chrome Plated Option
Stocked chrome plated as well as in yellow and orange. Chrome is what a professional buyer expects to see at this tier and costs nothing extra in tooling.
The Market Reference Model
This is one of the most commonly found configurations in the market, which means your customers already know how it should feel and will recognise it as a fair comparison.
Application scenarios
Where It Is Used
- General trade sealing across most common sealants
- Trade counter and contractor supply
- Own-brand mid-tier ranges
- Window and door perimeter work on site
Who it is for
The Buyers This Model Suits
Trade Distributors
Needs one model that satisfies most enquiries without either over-specifying or disappointing.
Own-Brand Programmes
Wants a recognisable configuration as the middle of a branded range, where familiarity helps rather than hurts.
General Contractors
Buys for crews doing varied sealing work and needs a gun that handles most cartridges without being fussy.
Problems it solves
What It Fixes
Frames Failing On Cold Cartridges
A 25 percent margin between working force and frame tolerance is what keeps a gun straight on a winter morning.
A Range With No Obvious Middle
Without a credible mid model, customers either buy the cheapest or refuse the most expensive. This is the one that makes the range work.
Handles That Flex Or Weigh Too Much
Aluminium alloy keeps the gun under 400 g while staying stiff at the grip.
Technical features
How It Is Built
Impressive Dispensing Force
JS8604 boasts a robust dispensing force of up to 120 kilograms, making it capable of handling high-intensity adhesive tasks.
Sturdy Four-Point Welded Structure
The gun body of JS8604 features a stable construction with a four-point welded structure both at the front and rear sections. This design ensures durability and stability throughout the operation.
Convenient Operation
JS8604 is user-friendly, enabling you to tackle adhesive tasks with ease.
Alloy Handle
The handle of JS8604 is crafted from aluminum alloy, providing an additional sense of lightweight and durability, enhancing overall comfort during operation.
Specifications
Published Figures For This Model
Every value below comes from our own product specification. Where a figure is not published we leave it out rather than estimating it.
| Net Weight | 398-400g |
|---|---|
| Packing | 1PC/ poly bag, 20pcs/ CTN |
| Color | chrome plated, yellow, orange, or customized |
| Carton Size | 45.5*23*23.5 |
| Push Force | 120KG |
| Maximum Tolerance | 150KG |
| Drive Ratio | 18:1 |
| Application | JS8604 is one of the commonly found models in the market, renowned for its widespread applicability |
| Colour options | chrome plated, yellow, orange, or customized |
| Packing | 1PC/ poly bag, 20pcs/ CTN |
| Minimum order | 2000pcs for a customised version |
| Customisation | Colour, packing method, carton appearance and logo |
Materials and manufacturing
How This Model Is Made
Parts for the JS-8604 are produced in our own workshops in Jinli Town, Zhaoqing. This model uses both routes: its moulded components come off our five horizontal and three vertical injection moulding machines, and its metal parts come off our fifteen automatic punching machines, nine automatic lathes and three welding machines. Tooling is designed and cut in our own mould room, which is why a change to this model does not queue behind another factory's schedule.
Quality Control
- Every model is weighed against its declared net weight during production, so the carton weight on your packing list matches what arrives.
- Stamped parts are produced in house on 15 automatic punching machines and 9 automatic lathes, so dimensional consistency is controlled at source rather than inspected on arrival.
- Moulded parts come off 5 horizontal and 3 vertical injection moulding machines running up to 10,000 mould open-and-close cycles per day, with tooling maintained in our own mould room.
- The quality management system was certified to ISO 9001:2015 in August 2023, with a certificate valid to 31 July 2026.
- Cartons are counted against the packing list as they are loaded into the container at our own factory door.
Certifications
The quality management system was certified to ISO 9001:2015 in August 2023, under standard GB/T19001-2016, for the manufacture and sale of glass caulking guns and sealant guns. The certificate on file runs to 31 July 2026; ask us for the current renewal status before relying on it. A TUV Rheinland assessment was obtained in 2016.
Customisation Options
- Aluminium Tube Anodizing And Colouring: More than 10 colours available; the surface can be given a frosted texture.
- Aluminium Tube Painting: Up to 10 colours with customisable patterns.
- Aluminium Tube Laser Engraving: Engraved logos, text and patterns on stamped fittings and aluminium tubes.
- Self-Adhesive Logo Labels: Applied to the product in the position the buyer specifies.
- Multi-Colour Logo Printing: Paint screen printing in any colour, with several colours printed at once.
- Tag And Product Screen Printing: Screen printed tags and product markings, multi-colour capable.
Use guide
Getting The Best Out Of It
Step 1
Cut the nozzle to the joint width before loading; an oversized opening cannot be corrected by trigger control.
Step 2
Retract the rod, seat the cartridge, and check the plate is flat against the base.
Step 3
Hold the nozzle at about 45 degrees and pull the gun along the joint rather than pushing it.
Step 4
Twist the rod to release pressure before setting the gun down.
Step 5
Wipe the dispensing plate at the end of each cartridge, since sealant on the plate is what eventually stops it seating flat.
Comparison
How It Compares In Our Range
JS-8604 is the reference point; the models around it are documented as steps from it.
| JS-8605 | The documented upgrade of this model: thickened full aluminium handle, super hard alloy dispensing plate, 160 KG, anti-drip. |
|---|---|
| JS8604-S | Semicircular frame variant at 310 g with a 22:1 ratio and a 100 KG tolerance, lighter and faster-feeding. |
| JS-8603 | Sheet iron frame at the same 120 KG but with a lower 130 KG tolerance and no aluminium handle. |
FAQ
JS-8604 Questions
What are the force ratings?
120 KG push force with a 150 KG maximum tolerance, at an 18:1 drive ratio. Net weight is 398-400 g.
Why is this model so widely copied?
It is one of the most common configurations in the market. That is useful to a buyer: the feel is familiar and the comparison against competitors is direct.
What is the difference between this and JS-8605?
JS-8605 is the documented upgrade. It adds a thickened full aluminium handle, a super hard alloy dispensing plate in place of iron, an anti-drip function and a contoured front handle, at 160 KG push force.
What finishes are available?
Chrome plated, yellow and orange in stock, plus custom colours. Chrome plating is available on the frame at no tooling cost.
How is it packed?
One piece per poly bag, 20 pieces per master carton at 45.5 x 23 x 23.5 cm. Minimum order is 2,000 pieces for a customised version.
Related products
Other Models In Cartridge Caulking Guns
Industries
Trades That Use This Model
Glass And Curtain Wall
Sealant guns and vacuum lifters for crews who handle and seal glass all day
Window And Door Manufacturing
Glazing, perimeter foaming and gap filling for window and door plants and installers
Construction Sealing And Waterproofing
Cartridge, sausage and powered guns for joint sealing and waterproofing trades
Further reading
Guides That Cover This Model
How To Read Caulking Gun Force Ratings
Push force, maximum tolerance and drive ratio describe three different things. Confusing them is the most common reason a gun fails in the field.
Cartridge Or Sausage Which Sealant Gun To Stock
Sausage packs cut cost per litre and packaging waste; cartridges are simpler and universally stocked. The right answer depends on who your customer is.
A Private Label Caulking Gun Specification Checklist
Everything a factory needs from you before an own-brand run, in the order it gets asked, so the quotation comes back once rather than four times.
Quote The JS-8604
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.