Cartridge Caulking Guns
JS8604-S Semicircular 9 Inch Silicone Gun for Catridge Silicone Sealant
A semicircular-frame 9 inch gun at 310 g, built around a high 22:1 drive ratio rather than around maximum force.
Product Overview
A semicircular-frame 9 inch gun at 310 g, built around a high 22:1 drive ratio rather than around maximum force. 80 KG push force with 100 KG tolerance. The higher ratio moves more sealant per squeeze, which suits flowing sealants and long runs where the operator wants fewer strokes, not more pressure. Minimum order is 1,000 pieces rather than 2,000.
Key benefits
Why Buyers Choose This Model
22:1 Drive Ratio
Higher than the 17:1 to 19:1 of the frame guns around it, so each squeeze delivers more sealant. On a long run of thin sealant that means fewer strokes and less hand fatigue.
310 g With A Semicircular Frame
The semicircular body is lighter than a full welded box frame while still cradling the cartridge, which keeps the gun under the weight of the JS-8604.
Chrome Plated Finish Available
Stocked in yellow and chrome plated. Chrome suits sealant brands who want the gun to look like part of a premium cartridge offer.
1,000 Piece Minimum
Half the minimum of most models in this category, which makes it a practical way into an own-brand range.
Application scenarios
Where It Is Used
- Long continuous runs of flowing sealant
- Retail and promotional bundles at a lower minimum quantity
- Acrylic and low-viscosity sealant application
- Own-brand trials before committing to larger quantities
Who it is for
The Buyers This Model Suits
Buyers Testing An Own Brand
The 1,000 piece minimum makes a branded trial run realistic rather than theoretical.
Acrylic Sealant Suppliers
Sells lower-viscosity products where volume per squeeze matters more than push force.
Decorating And Fit-Out Trades
Runs long lengths of decorator's caulk and wants fewer trigger pulls per metre.
Problems it solves
What It Fixes
Too Many Trigger Pulls Per Metre
On a low-ratio gun a long run of thin sealant is all trigger work. 22:1 cuts the number of strokes.
Minimums That Block A Trial
A 2,000 piece minimum stops a lot of own-brand projects before they start. This model halves it.
Heavy Guns For Light Sealant
There is no reason to carry a 750 g welded gun to apply decorator's caulk. 310 g is the right tool.
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 | 310 g |
|---|---|
| Packing | 1PC/ poly bag, 20pcs/ CTN |
| Color | yellow , chromed plated, or customized |
| Carton Size | 43*20*27 |
| Push Force | 80KG |
| Maximum Tolerance | 100 KG |
| Drive Ratio | 22:1 |
| Colour options | yellow , chromed plated, or customized |
| Packing | 1PC/ poly bag, 20pcs/ CTN |
| Minimum order | 1000pcs for a customised version |
| Customisation | Colour, packing method, carton appearance and logo |
Materials and manufacturing
How This Model Is Made
Parts for the JS8604-S are produced in our own workshops in Jinli Town, Zhaoqing. This model is predominantly a metal product, made on 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 small to start with; at 22:1 the gun delivers more sealant than you may expect.
Step 2
Load with the rod fully retracted and the plate seated on the cartridge base.
Step 3
Use short, even strokes and let the travel speed set the bead width.
Step 4
Twist the rod to release pressure at the end of a run.
Step 5
Keep the semicircular frame clear of cured sealant so the cartridge still seats squarely.
Comparison
How It Compares In Our Range
Choose on ratio against force, not on price alone.
| JS-8604 | 120 KG at 18:1 in a welded four-point frame at 400 g. More force, fewer strokes' worth of volume. |
|---|---|
| JS8611 | Adjustable 18:1 to 28:1 at 160 KG, if you need both behaviours from one gun. |
| JS-8601 | 50 KG at 19:1 in PP, the cheaper option if force is genuinely not required. |
FAQ
JS8604-S Questions
Why is the push force lower than the JS-8604?
Because the ratio is higher. 80 KG at 22:1 is a different design choice from 120 KG at 18:1: more volume per squeeze, less pressure. For flowing sealants the higher ratio is the more useful figure.
What is the frame tolerance?
100 KG maximum tolerance against 80 KG working force, a 25 percent margin.
Is the minimum order really 1,000?
Yes, 1,000 pieces for this model, against 2,000 for most of this category. It is the easiest model here to start an own-brand range on.
What finishes are available?
Yellow and chrome plated in stock, plus custom colours on request.
How is it packed?
One piece per poly bag, 20 pieces per master carton at 43 x 20 x 27 cm.
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 JS8604-S
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.