Back-Up Rings & Anti-Extrusion Rings

Expert supplier of back-up rings and anti-extrusion devices. Precision-manufactured components to prevent seal extrusion in high-pressure applications.

Back-Up Ring Solutions

McDowell & Company specializes in providing back-up rings designed to prevent seal extrusion in high-pressure applications. Our precision-manufactured components enhance seal performance and extend service life in demanding environments.

Back-Up Ring Advantages

• Prevents seal extrusion
• Extends seal life
• Increases pressure ratings
• Improves system reliability
• Reduces maintenance
• Cost-effective protection
• Enhanced performance
• Simple installation
• System optimization
• Proven solutions

Back-Up Ring Materials

• PTFE/Teflon®
• PEEK
• Nylon
• Delrin®/Acetal
• UHMW-PE
• Glass-filled compounds
• Carbon-filled materials
• Custom compounds
• Temperature-resistant options
• Wear-resistant materials

Back-Up Ring Styles

• Spiral wound rings
• Solid rings
• Split rings
• Cantilever designs
• Step-cut rings
• Scarf-cut rings
• Custom profiles
• Special geometries
• Endless rings
• Multiple ring sets

Back-Up Ring Applications

• Hydraulic cylinders
• Pneumatic systems
• High-pressure valves
• Oil and gas equipment
• Chemical processing
• Industrial machinery
• Mobile equipment
• Aerospace systems
• Defense applications
• Custom equipment

Back-Up Ring Installation

• Gland design
• Hardware compatibility
• Installation direction
• Surface finish requirements
• Groove dimensions
• Material selection
• Operating conditions
• Pressure ratings
• Temperature limits
• System compatibility

Back-Up Ring FAQ

When are back-up rings needed?

Back-up rings are essential in applications where system pressure could cause seal extrusion, typically above 1500 PSI.

What is the difference between split and solid back-up rings?

Split rings offer easier installation but may have slightly lower pressure ratings than solid rings.

Can back-up rings be used with any seal?

Back-up rings are designed for specific seal profiles and gland designs. Our team can help select the right configuration.

Which side of the seal needs a back-up ring?

Back-up rings should be installed on the low-pressure side of the seal. Some applications require rings on both sides.

Back-Up Ring Quality Assurance

• Material certification
• Dimensional inspection
• Quality documentation
• Lot traceability
• Performance validation
• Surface finish verification
• Installation instructions
• Technical support

Back-Up Ring Engineering Support

• Design assistance
• Material selection
• Application consulting
• System analysis
• Prototype development
• Performance testing
• Installation guidance
• Technical documentation

Contact our sales team today to discuss your back-up ring requirements. With over 50 years of experience in sealing technology, we ensure your sealing systems perform reliably under pressure.