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The Slurryflex SJB-Series Double-Arch Rubber Expansion Joint helps absorb pipe movements, relieve stress, reduce noise and vibration, and compensate for pipe misalignment. It has two arches that accommodate more movement than a single-arch expansion joint.

This expansion joint can be used in the transfer of abrasive slurries, sand and gravel in mineral processing plants, tailings pipelines, and long-distance slurry pipelines. It can also be customised for chemicals, acids, and hydrocarbons.

All of our Slurryflex expansion joints are custom made in Australia from premium materials. Tell us about your application and we’ll help you choose the right materials, size, length, and end connections.

Technical specifications





Joint diameter

DN50–1500 (2–60”)
Contact us for larger sizes

Joint lengths

Custom lengths to suit requirements

End connections

Fixed flange
Beaded end swivel flange
Double flange
Plain cut end

Flange drillings

AS2129, ASME, BS, SABS, JIS, DIN, custom

Pressure rating

Up to 5000kPa as standard
Contact us for special requirements

Safety factor

4:1 for minimum burst pressure as standard
Contact us for special requirements

Temperature rating

-30°C to +75°C as standard
Contact us for special requirements

Material specifications

Inner liner

Slurryflex Grade-A Rubber, proprietary compound for wear performance in abrasive slurries (contact us for other specialty applications)

Outer cover

Proprietary rubber compound for UV, ozone, and abrasion resistance

End connections

Carbon steel (painted, galvanised, custom)
Stainless steel (SS304, SS316)
Exotic alloy (on request)

How we help you select your SPI package:

1. Tell us what you need

Tell us about your project. What items are on your MTO list, and what options do you need to weigh up?

2. Choose the right solution

Weigh up the options. We'll do the analysis, discuss the options with you, and recommend the right products—the choices we'd make in your shoes.

3. Get the job done

You get the complete package delivered to site as ordered. The right price, reliable delivery, and everything to spec. No surprises.

We're here to help

Got questions? Need advice? Tap into our experience and get specialist advice from our friendly team.

Slurry piping audits

Solve slurry piping maintenance problems for good. No more leaking pipes, no more unplanned shutdowns.