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Industrial Backup Rings: Enhancing O-Ring Performance in Demanding Applications
In critical industrial sealing applications, O-rings are often subjected to high pressures, which can lead to a phenomenon known as extrusion. Industrial backup rings are specifically engineered components designed to prevent this extrusion, thereby significantly extending the service life of O-rings and ensuring the integrity of sealing systems.
- Economical Pricing Options
- Compliance with AS568 & ISO 3601
- Excellent Technical Support & Customization
Oringworld’s Backup Rings Solution
Make Oringworld your innovation partner! Our Backup Rings are effective in processing an array of materials from thermoplastic and elastomers to composites.
- Extrusion Prevention: Robust support to maintain O-ring geometric stability under extreme pressure.
- Advanced Materials: High-performance PTFE, PEEK, and Nylon for diverse chemical environments.
- Custom Profiles: Bespoke designs tailored to precise OEM specifications and unique groove geometries.
- Standard Compliance: Manufactured to AS568 and ISO 3601 international standards.
Backup Rings for Sale
Solid (Uncut) Backup Rings
Continuous rings for maximum support in static applications. Ideal for high-pressure flange connections.
Split (Scarf Cut) Backup Rings
Single cut design for easy installation in closed grooves. Perfect for dynamic piston and rod seals.
Spiral (Spiro-Cut) Backup Rings
Multiple turns for exceptional flexibility. Best for large diameter seals and radial movement systems.
Material Selection for Optimal Performance
| Material Type | Key Characteristics | Temperature Range |
|---|---|---|
| PTFE | Excellent chemical resistance, low friction. | -200°C to +260°C |
| PBT | High strength, stiffness, dimensional stability. | -40°C to +140°C |
| Nylon | High tensile strength, abrasion resistance. | -30°C to +100°C |
| PEEK | Exceptional mechanical strength, high temp. | -60°C to +260°C |
Answers to Common Queries about Backup Rings
How do I know if I need a backup ring?
Backup rings are typically required when O-rings are used in applications with high pressure (generally above 1500 PSI), large extrusion gaps, or dynamic conditions where the O-ring is prone to extrusion.
Can backup rings be reused?
It is generally recommended to replace backup rings whenever the O-ring is replaced. While some materials like PTFE may appear reusable, they can deform under pressure, potentially compromising future sealing performance.
What is the difference between a single and double backup ring setup?
A single backup ring is used on the low-pressure side for unidirectional extrusion resistance. A double backup ring setup is used in applications where pressure can alternate from both directions.