Silicone purge dam discs for pipe welding, designed for DIY fabrication and full customization with your own logo.

A new of large-diameter purge dam equipment from Ø100+ for professional in purging root welding applications.

If you are new to this project, start reading here — with us, you can produce your own pre-form purge dam equipment, create branded purge solutions and stand out on site with a truly professional approach.

We have finished developing a new series of purge dam discs from Pipeweld.ee — now available from Ø100 mm to Ø500 mm and above.
At your request we can create even larger single-ended inflatable purge dam systems.
These purge discs fit standard pipe blocking applications as well as any purge gas system where a tight and reliable internal gas seal is required.

 Advantages of the Purge Dam Weld System

 1. Clean and Simple Pre-Form Casting Process

Previous purge dam versions required a closed mold, meaning silicone had to be injected under pressure. Even after vacuuming, trapped air remained inside, creating defects in the weld purge equipment.

The new design is an open pre-form mold (dish-type).
This greatly simplifies the purge dam manufacturing process because:

• casting becomes easier;
• the process is cleaner;
• final part quality increases;
• no adhesive injection or vacuum chamber required;
• oxygen contamination is reduced due to fewer casting defects.

2. Universal Diameter & Wall-Thickness Adaptation (Professional Pipe Purging Equipment)

We accounted for different pipe wall thicknesses from S10–S80.
Each base mold accepts special rings sized for each pipe diameter and wall thickness.
Every ring is marked with its corresponding pipe size (S-rating) for professional welders and purge monitors.

3. Repairable Design

If a purge dam accidentally melts or burns, there is no need to discard it or pay some extra expense.

The product now consists of two silicone parts, and only the damaged section needs replacement.
You may also cut out the damaged area, reinstall the part into the mold and refill silicone only into the defective zone — saving up to 90% of material.

4. Multiple Silicone Hardness Options Reduce Final Cost

We use Shore A 35 silicone for optimal ine purging seal performance.
If you only have ShA 15, you can still produce purge dams by casting them twice as thick, reaching an equivalent hardness of ~ShA 30.

All molds include a marked silicone fill line designed specifically for ShA 35.

5. Printable on Any Standard 3D Printer

Even Ø500 mm purge dam molds can be printed on typical desktop printers.
The mold consists of several interlocking parts, which assemble into a full purge dam pre-form without special tools.

What’s Included in the Pipe Purging File Package

• For every diameter you receive:
• 3D model of the purge dam mold
• 3D models of interchangeable rings (S40–S80)
• 3D model of your logo (if branding is ordered)
• PDF technical drawing with material specifications
• Laser-cut stainless steel mounting plate (DXF file)
• Full specification sheet

This development required significant engineering time, which is why the package is paid.

What do you do with all this?

• Contact a local 3D-printing service — they will print an exact mold for casting.
• Contact a local laser-cutting service — they will cut all parts according to our design.
• Buy the silicone and other components — everything is listed in the documentation.
• Assemble it all yourself and you get a fully professional end product.

Pricing (Purge Dam Tools Package)

Full package with Pipeweld.ee branding

• 500 € — complete set for Ø100–500 (10 sizes)
• 79 € — any single size
  ***Bulk discounts available

Branding (your logo)

• 300 € — branded 3D model for one size
• 2500 € — full branded set Ø100–500 (10 sizes)
  ***Bulk discounts available

How to Purchase

Download the supply contract here, fill in the highlighted yellow fields, and send the completed document back to us by email.

Email us: info@new.pipeweld.ee
Subject: “Purge Dam”

• Payment options:
• PayPal
• SWIFT bank transfer
• Revolut
• BTC
• Sberbank RUB transfer options

***25–100% Discount Option: Collaboration Program

We are open to partnerships, especially if you:

• have an audience or are a public figure;
• have a website, TikTok, Instagram, YouTube, or messaging-channel;
• write technical content in public communities;
• are ready to start posting about welding, pipe purging, or purge equipment.

Email: info@new.pipeweld.ee
Subject: “Collaboration”