Dual Hardness Series 1 & Series 2

Dual Hardness S1 & S2 - 360° View

Dual Hardness S1 & S2 - 360° Cross Section View

Dual Hardness S1 & S2 - Top Down View

Dual Hardness S1 & S2 - Side View

Dual Hardness S1 & S2 - Cross Section Close Up

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The Dual Hardness Series 1 Gasket is a one-piece dual durometer lip seal for AS4765 / A4441 S1 Mandrel socketed PVC / PVC-O DN50 – DN575 Pressure Pipes.

The gasket is initially fitted into the socket by the pipe manufacturer, however, the gasket can be removed prior to field installation if necessary.

The pipe gasket polymer material conforms to AS1646, EN681-1, ASTM F-477 and other international standards, as well as AS4020:2018 and other international potable water standards.

All Gulf Rubber Pipe gaskets are SAI Global Standardsmarked to AS1646-2007, under Licence SMKP 20133.


Low insertion force

Removable gasket

StandardsMark / WaterMark product compliance

International approvals

Assured gasket quality

Sizes And Range

Series 1

  • SIZE
  • PIPE O.D
DN50 60
DN80 89
DN100 114
DN150 160
DN200 225
DN225 250
DN250 280
DN300 315
DN375 400
DN450 500
DN500 560
DN575 630

Series 2

  • SIZE
  • PIPE O.D
DN100 122
DN150 177
DN200 232
DN225 259
DN250 286
DN300 345
DN375 426
DN450 507
DN500 560
DN600 667

Quality Assurance

It’s our goal to ensure you never experience production downtime, expensive repairs, or frustrating warranty claims. That’s why all Gulf factories around the world, and all third-party factories that supply to Gulf, meet the quality standards required for ISO 9001 or IATF 16949.

Our products are manufactured to precise specifications with tight tolerances. When you partner with Gulf, you can have complete peace of mind knowing you will always receive the highest quality components.

Custom Design Capability

At Gulf, we thrive on the opportunity to innovate. If you need a custom product or solution, then our trusted engineers, chemists, and technologists will work tirelessly to deliver above and beyond your expectations. Whatever your specifications or requirements, you can rest easy knowing that you’ve got the strategic partner who can solve the problem.

Searching for the right partner to solve your problem?

Book a consultation with our engineering team

Since 1980, Gulf Rubber’s specialised rubber and plastic engineers have designed bespoke, technical solutions for our partners across the globe. If you have a problem you can’t solve, a concept you can’t pinpoint, or a fragmented process you wish to simplify, we can help.

We’ll get to know your product and application, design a new solution, and use our experience to improve your business outcomes.