Manufactured by precision CNC machining and high-temperature injection molding, Ideal Plastic customized PEEK back-up rings deliver stable low-friction performance and pulse pressure resistance. Widely used in hydraulic machinery, oil and gas downhole equipment, semiconductor vacuum systems and chemical fluid devices, they support custom drawing production, small-batch sampling and bulk export orders for rigorous industrial sealing scenarios. Contact us!
Ideal Plastic is a PEEK back-up rings manufacturer. The products are rigid auxiliary protective components specially designed for high-pressure sealing systems. They are always assembled with elastic O-rings rather than working independently. As a rigid protective barrier, they effectively prevent O-rings from being squeezed into assembly gaps under extreme pressure, avoiding shear damage and sealing failure. This significantly improves the pressure resistance level and overall service life of the complete sealing assembly, making them essential accessories for high-end industrial precision sealing equipment.
Core reminder: Regardless of the production process, stress-relief annealing is essential to ensure long-term dimensional stability and anti-warping performance of Polyetheretherketone Back-up Rings in extreme working environments.
|
Item
|
Specification
|
|---|---|
|
Product Name
|
Polyetheretherketone Back-up Rings
|
|
Material
|
Unfilled PEEK, Carbon Filled PEEK
|
|
Color
|
Black, Beige
|
|
Axial Thickness Matching Parameters
|
1. O-ring Section 1.78: Matching back-up ring thickness 0.5-1.0mm2. O-ring Section 2.62: Matching back-up ring thickness 1.5-1.8mm3. O-ring Section 3.53: Matching back-up ring thickness 1.8-2.0mm4. O-ring Sections 5.33, 6.99: Matching thickness 2.0-4.1mm
|
|
Inner Diameter (ID) Range
|
1. Small size: 5mm-20mm2. Medium size: 20mm-100mm3. Large size: 100mm-300mm
|
|
Dimensional Tolerance
|
±0.02mm ~ ±0.05mm
|
|
Sample Service
|
To be negotiated
|
|
Certifications
|
ISO9001, RoHS, REACH
|
|
Dimensional Standards
|
AS568 Imperial Standard, ISO3601 Metric Standard
|
|
Structure Type & Service
|
Solid Unsplit type, Bevel cut / Diagonal split type, Step back-up ring type. Supports standard parts supply and non-standard customized processing according to drawings, covering small-batch sampling to mass production.
|
These rings act as rigid anti-extrusion reinforcement inserts specially designed for high-pressure sealing arrangements. They leverage the exceptional physical advantages of PEEK polymer to protect primary elastic seals such as O-rings from extrusion damage.
PEEK exhibits outstanding anti-creep performance. Permanent deformation hardly occurs under sustained heavy compression. Even under extreme pressure paired with high temperatures, the rings retain geometry and continuously shield O-rings, sustaining reliable anti-extrusion performance over extended cycles.
Faced with repeated shifts between high and low temperatures, Polyetheretherketone Back-up Rings feature steady thermal expansion behaviour without obvious distortion. The material stays ductile at low temperatures and resists softening under heat to keep the whole sealing assembly functional.
Strong structural rigidity delivers reliable compression resistance. Different from nylon alternatives, PEEK absorbs negligible moisture. Water contact will not trigger swelling, so assembly jamming and dimensional deviation risks are eliminated entirely.
Inherent solid self-lubrication brings a low friction coefficient. For reciprocating and rotary sealing systems, friction between the back-up ring, O-ring and metal groove remains low. Additional grease is unnecessary, matching clean oil-free production environments.
Robust mechanical strength enables PEEK to endure cyclic pressure surges and recurring impact loads. Crack formation and fracture rarely happen under continuous high-pressure pulses, making them suitable for hydraulic cylinders and pulse-pressure machinery.
As matched protective accessories for high-pressure sealing structures, these rings are engineered chiefly to solve O-ring damage triggered by extrusion under intense pressure. They serve especially well in harsh environments featuring high heat, extreme pressure, chemical corrosion and alternating pressure loads — conditions where standard PTFE or nylon back-up rings tend to fail prematurely from creep.
Hydraulic and fluid power machinery
Downhole equipment for oil & gas energy exploration
Semiconductor vacuum processing systems
On-board aerospace components
Chemical fluid handling equipment
Precision high-pressure medical instruments
We are a professional manufacturer focused exclusively on the production of high-performance PEEK back-up rings. We deeply recognize the prevalent pain points in high-pressure sealing scenarios that trouble most end users:
- O-ring extrusion failure under continuous high pressure
- Cold flow deformation and permanent distortion of back-up rings
- Product warpage and system leakage after field installation
Most mainstream PEEK back-up ring suppliers only ensure products meet basic appearance and dimensional standards under room temperature, while largely ignoring the control of internal residual stress. Such products easily pass routine room-temperature inspections but fail quickly under extreme combined high temperature and high pressure. This inevitably leads to:
- Unexpected and unplanned equipment downtime
- Frequent part replacement and sharply increased maintenance costs
- Unstable operation of hydraulic and fluid sealing systems
To solve this common industry flaw, we take stress-relief annealing as a mandatory core production process, which differentiates our products from ordinary counterparts. All our products, whether precision CNC machined or high-temperature injection molded, adopt standardized production procedures:
- Strict segmented temperature-controlled annealing: Eliminates internal residual stress generated during machining and molding
- Maximized stress release: Avoids post-installation deformation under harsh working conditions
- Stable overall performance: Guarantees consistent flatness and precise dimensional stability under real high-temperature and high-pressure operating environments
We provide a full lineup of customizable Polyetheretherketone Back-up Rings with diverse specifications, covering mainstream models and personalized solutions:
- Product types: Solid endless rings, bias-cut split rings, and custom stepped rings
- Standard specifications: Full sizes compliant with AS568 and ISO3601 standards
- Customization service: Fully tailor-made products according to customers’ exclusive technical drawings
- Raw material options: Imported & domestic unfilled pure PEEK, carbon fiber-filled PEEK for enhanced strength and wear resistance
Our versatile Polyetheretherketone Back-up Rings are widely applied to diverse extreme working scenarios, including semiconductor equipment, downhole oil & gas facilities, high-pressure hydraulic systems, new energy equipment, and chemical processing machinery, satisfying varied stringent operating requirements.
As a reliable supplier of high-pressure PEEK sealing auxiliary components, GuangZhou Ideal specializes in manufacturing premium back-up rings that effectively prevent elastic seal extrusion in hydraulic and fluid systems. Our core advantages are summarized as below:
- Professional technical support: Mature R&D and production team to support customized dimensions and modified material formulas
- Scenario-oriented customization: Optimize products targeting different extreme pressure and temperature working environments
- Global service coverage: Long-term cooperative clients include hydraulic cylinder manufacturers, fluid valve enterprises and offshore engineering equipment suppliers across multiple countries and regions
A1: Definitely not. O-rings supply elastic rebound for sealing effects, while Polyetheretherketone Back-up Rings only offer anti-extrusion protection. The two parts must be installed as a matched set.
A2: Solid endless rings feature superior rigidity and far better performance under extreme pressure. Split variants allow hassle-free installation into seal grooves, fitting structures that demand frequent disassembly and reassembly. Their maximum pressure rating is slightly lower compared to solid styles.
A3: PEEK boasts higher rigidity, plus vastly enhanced resistance to creep and cold flow. It resists deformation and premature failure under high temperature and high pressure far better than PTFE. PTFE is softer and more cost-effective solely for basic low-pressure working conditions.
A4: Yes. Pressure alternates on both sides continuously in bidirectional working conditions. The O-ring needs rigid supportive protection on two sides. Single-sided installation will lead to seal damage when pressure reverses.
A5: The most common cause is insufficient removal of internal residual stress. Once the equipment heats up and bears pressure, the rings warp out of shape, creating tiny gaps. O-rings then get squeezed through these gaps and sustain irreversible damage.
A6: Prioritize solid endless Polyetheretherketone Back-up Rings manufactured via CNC machining. This avoids drawbacks including split structures and weld line defects from injection molding. Meanwhile, confirm the supplier implements standardized annealing stress relief procedures.
A7: Plenty of semiconductor processes operate under high pressure, where FFKM O-rings are prone to extrusion damage. PEEK delivers stronger anti-creep performance. In addition, pure PEEK grades generate minimal material outgassing, satisfying strict cleanliness requirements inside process chambers.
