Patented Self-Locking Guns
JS-8631 Patented Self-Locking Structural Adhesive Gun (Designed for Sausage-Packaged Structural Adhesives)
The sausage-pack member of the patented family: 120 KG push force at 25:1 from a 460 g gun, with a 150 KG plus or minus 5 KG structural tolerance.
Product Overview
The sausage-pack member of the patented family: 120 KG push force at 25:1 from a 460 g gun, with a 150 KG plus or minus 5 KG structural tolerance. The barrel is modified reinforced polypropylene rated to 65 KG, with a glossy centre section for grip and a transparent section so the operator can see the adhesive level.
Key benefits
Why Buyers Choose This Model
Transparent Barrel Section
The operator can see how much adhesive is left and how far the plunger has travelled, which on structural work means knowing whether there is enough for the next run before starting it.
Self-Locking Mortise And Tenon Plunger
Locks to the rod at each stroke, delivering greater dispensing force than a conventional gun. Protected by two of our registered patents.
460 g And 25:1
A high ratio at low weight, which suits sausage-packaged structural adhesive: plenty of volume per squeeze from a gun that can be held at reach.
Barrel Rated To 65 KG
The modified reinforced polypropylene barrel is itself rated to withstand 65 KG, with a glossy finish on the centre section for grip.
Application scenarios
Where It Is Used
- Sausage-packaged structural adhesive on glass and panels
- Cold-weather structural sealing
- Work where knowing the remaining volume matters
- Patented tier of an own-brand sausage range
Who it is for
The Buyers This Model Suits
Structural Adhesive Crews
Uses sausage packs of structural product and needs force without carrying an aluminium-barrelled heavy gun.
Cold-Climate Applicators
This model was run at 0 C and at minus 25 C to confirm the self-locking plunger still engages and releases.
Distributors Wanting Exclusivity
Patented to us, so a competitor cannot source the same gun elsewhere.
Problems it solves
What It Fixes
Running Out Mid-Joint
A transparent barrel section tells the operator before they start whether the pack will finish the run.
Force From A Light Gun
The patented plunger is how 460 g delivers 120 KG, where a conventional gun needs more mass.
Low-Temperature Reliability
Tested at minus 25 C, which is a specific answer rather than a general claim about durability.
Technical features
How It Is Built
Mortise and Tenon Technology
JS8631 features an innovative self-locking mortise and tenon structure, providing greater dispensing force compared to conventional caulking guns.
Strength 120KG Dispensing Force
JS8631 offers a powerful dispensing force of up to 120KG, suitable for various caulking tasks.
Drip Prevention Function
This gun is equipped with a drip prevention function, reducing adhesive wastage and maintaining a clean work environment.
Latest Generation Handle Design
JS8631 incorporates a latest generation handle design, providing a comfortable grip and excellent operational experience.
Two Patented Technologies
JS8631 is protected by two patented technologies, showcasing its innovation and uniqueness.
Three Color Options
JS8631 offers three color options, presenting an eye-catching appearance.
Lightweight and Portable
With an overall weight of only 460 grams, JS8631 is highly suitable for use in various construction environments.
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 | 460g |
|---|---|
| Packing | 2PC/ poly bag, 32pcs/ CTN |
| Color | blue, or customized |
| Carton Size | 50*46*54 |
| Push Force | 120KG |
| Maximum Tolerance | 150KG±5KG |
| Drive Ratio | 25:1 |
| Capacity | Designed with exceptional structural strength, it can withstand loads of up to 150KG, ensuring robust performance |
| Material | Constructed from modified reinforced polypropylene, the gun body exhibits enhanced durability, especially the plastic tube part, which can withstand pressures of up to 65KG |
| Barrel | The middle portion of the plastic tube undergoes a glossy treatment, providing an excellent grip during use |
| Application | The transparent plastic tube allows users to observe the degree of silicone application, facilitating monitoring of the application process |
| Colour options | blue, or customized |
| Packing | 2PC/ poly bag, 32pcs/ 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-8631 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
Unscrew the nose cone, load the sausage pack, cut the closure and refit.
Step 2
Watch the transparent section rather than guessing at remaining volume.
Step 3
Squeeze to full stroke end so the self-locking plunger engages properly.
Step 4
Hold the barrel at the glossy centre section, which is textured for exactly that.
Comparison
How It Compares In Our Range
Two sausage models in the patented family, plus the bottle-pack pair.
| JS8631-2 | Thickened plunger: 150 KG at 20:1 with a 170 KG tolerance and 465 g. |
|---|---|
| JS8630 | The bottle-pack equivalent at the same 120 KG, 20:1, 400 g. |
| JS8622-B | A conventional aluminium sausage gun at 180 KG and 850 g, without the patent. |
FAQ
JS-8631 Questions
Has this gun been tested at low temperature?
Yes. The JS8631 was run at 0 C and at minus 25 C to confirm the self-locking plunger still engages and releases when the adhesive stiffens. Both test runs are documented.
What are the ratings?
120 KG push force, 150 KG plus or minus 5 KG maximum tolerance, 25:1 drive ratio, 460 g net weight. The barrel itself withstands 65 KG.
Why a polypropylene barrel rather than aluminium?
It allows a transparent section so the adhesive level is visible, and keeps the gun at 460 g. The material is modified reinforced polypropylene rated to 65 KG.
What colours are available?
Blue in stock with three colour options available. Minimum order 2,000 pieces per colour customised.
How is it packed?
Two pieces per poly bag, 32 pieces per master carton at 50 x 46 x 54 cm.
Related products
Other Models In Patented Self-Locking 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
Construction Sealing And Waterproofing
Cartridge, sausage and powered guns for joint sealing and waterproofing trades
Structural Anchoring And Rebar Fixing
1:4 injection anchor adhesive guns for post-installed rebar and anchor bolts
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.
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-8631
Send the quantity and your colour and packing requirements, and we will confirm the minimum and a production date.