Rotec Composite Group · Manufacturer

Backing rings for PE, PP, PVC & GRP.

FRP backing rings, direct from the manufacturer. Find the right size, pressure rating and drilling standard for your project.

DN15–DN300 · 6–16 BarHigh-pressure hot pressing
DN350–DN1200 · 3–16 BarResin Transfer Moulding (RTM)
Browse Backing Rings Contact Us
Rotec warehouse and manufacturing in Lelystad
Rotec Composite GroupLelystad, the Netherlands
30+
Years Experience
110+
Countries Served
1000+
Products
ISO
9001 & 14001 Certified

Shop by pipe system

Select the right Backing Ring based on your pipe system

Anthracite backing ring for PE and PP pipe systems

PE & PP Pipes

For PE and PP stub flanges. DN15–DN1200.

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Grey backing ring for PVC pipe systems

PVC Pipes

For PVC stub flanges. DN10–DN300.

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Warm sand backing ring for GRP pipe systems

GRP Pipes

For GRP / FRP pipe systems. DN15–DN1200.

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Why Choose BackingRing.com?

Industry-leading quality backed by decades of expertise

Corrosion Free Backing Rings

Corrosion-free GRP/FRP construction delivers reliable performance in harsh industrial environments.

Hot Pressing Technology

Controlled hot pressing enables consistent, high-volume Backing Ring production up to DN300.

Resin Transfer Moulding

RTM delivers DN350–DN1200 Backing Rings with precise reinforcement placement and repeatable quality.

ISO 9001 Certified

Documented material, production and quality controls provide full traceability across 20+ international standards.

Need a Custom Solution?

Our engineering team can help you finding the perfect Backing Ring for your specific application up to DN4000 mm diameter. Contact us for technical support and customized quotes.

Contact Us
Call +31 320 260 933

What is a backing ring?

A backing ring fits behind a pipe’s stub flange, allowing it to be bolted to a matching flange, valve or pump.

For pipe systemsPE, PP, PVC & GRP
Browse backing rings
Rotec illustration of a bolted composite pipe connection
Composite pipe connection · Rotec Composite Group
Sizes, manufacturing & applications

Sizes & standards

EN1092, ANSI, AS, AWWA, JIS and BS drilling standards. Match the ring to your pipe diameter and pressure rating.

Custom sizes up to DN4000.

Manufacturing

Hot pressing SMC production
DN15–DN300
RTM Resin transfer moulding
DN350–DN1200

Applications

For water treatment, chemical processing, mining, energy, marine and irrigation pipework.

Ask our technical team

By Rotec Composite Group

BackingRing.com is a brand of Rotec Composite Group, a leading European manufacturer of glass fiber reinforced composite products with over 35 years of industry experience and track record.

Based in Lelystad, The Netherlands, we specialize in composite flanges, fittings, and Backing Rings for industrial piping systems. Our products are trusted in 110+ countries worldwide.

  • European quality manufacturing
  • In-house CAD design and FEA analysis
  • Full range of Backing Rings up to DN4000
  • Technical support and custom solutions
Learn More About Us
Rotec large-diameter pipe and flange project
Large-diameter composite project · Rotec Composite Group