The PEEK rings from Ideal Plastic factory are precision circular functional parts widely fitted inside high-end industrial machinery. They serve mechanical limiting, sealed isolation, abrasion shielding, electrical insulation separation and pinpoint positioning purposes all at once. For sophisticated precision equipment, they have become the most trusted annular solution on the market. Welcome to contact us!
Ideal Plastic provides high-performance China PEEK rings. Compared with conventional circular components crafted from metal, nylon or POM, these rings combine high-temperature resistance, inherent dry self-lubrication, electrical insulation, chemical resistance plus ultra-low creep performance into one single component.
It is a general umbrella term for all ring-shaped PEEK components, rather than a single fixed part. Despite a uniform circular profile, different types feature tailored functions for various industrial scenarios. Our full product lineup includes:
- PEEK washers & gaskets
- PEEK back-up rings
- PEEK sealing rings
- PEEK support rings
Each PEEK ring type serves exclusive core functions in sealing systems:
- PEEK back-up rings: Provide physical protection for O-rings and primary sealing rings to prevent extrusion damage
- Sealing rings: Serve as the core barrier to block fluid medium penetration
- O-rings: Offer continuous elastic preload to maintain stable and reliable sealing performance
Widely used as isolating gaskets and friction pair wear rings, Polyetheretherketone Rings are installed between rotating shafts and equipment cavities. Leveraging PEEK’s inherent self-lubricating property to support oil-free dry friction, they deliver key operational benefits:
- Greatly reduce friction and component abrasion
- Protect expensive metal shafts and equipment housings from wear damage
- Effectively lower mechanical operating noise
- Significantly prolong the service life of transmission assemblies
Acting as high-performance snap rings and limit collars, these rings excel at mechanical positioning. Thanks to outstanding anti-creep properties, they maintain stable precision under harsh high-temperature and high-pressure conditions with the following advantages:
- Stably restrict axial displacement of moving parts and lock assembly clearances
- Maintain complete dimensional integrity under long-term high heat and continuous pressure
- Avoid component offset and position deviation during prolonged equipment operation
- Sustain consistent and precise mechanical operating accuracy
Superior to traditional metal rings, PEEK rings feature strong environmental adaptability and multi-functional performance for diverse industrial equipment. Their core application advantages are as follows:
Fit for pumps, valves and rotary assemblies to assist sealing, damp vibration and reduce running noise
Resist erosion from hydraulic oils, coolants, weak acids, weak alkalis and salt spray
Protect core internal parts of chemical fluid systems and offshore marine machinery
Effectively avoid rust failure common with conventional metal rings
PEEK’s high melting point, high melt viscosity and fast crystallization rate may cause processing defects such as residual stress, sink marks, deformation and poor circularity in precision annular parts. To resolve these issues and ensure consistent long-term dimensional stability, we adopt standardized manufacturing solutions:
Precision CNC machining and high-temperature precision injection molding for different batch and precision demands
Standard professional post-processing is matched for both production methods
Effectively eliminate processing defects and guarantee lasting dimensional stability for end applications
This manufacturing route works well for thin-wall rings, large-diameter rings, semiconductor CMP rings, medical-grade annular components, slotted / stepped special-shaped rings, non-standard customized pieces and small-batch R&D samples. No mold opening is required. Custom orders based on engineering drawings or physical samples are fully acceptable.
Boasting outstanding machining accuracy, dimensional tolerance can reach ±0.01 mm. Circularity and flatness are well controlled. A dedicated annealing session after processing relieves internal stress thoroughly, so permanent deformation will not emerge after installation.
That said, CNC processing still faces tangible hurdles when handling thin-wall and large-diameter PEEK rings. Workpieces tend to deform under clamping force; material rebound happens right after cutting; flatness and circularity are tough to stabilize. Excessive cutting heat melts partial PEEK material, resulting in burr formation and rough surface texture.
1. We adopt tool fixtures with soft contact surfaces to lessen clamping tension;
2. we carry out layered cutting with shallow cutting depth; workpieces go through annealing right after rough machining before fine cutting proceeds;
3. Cutting parameters are fine-tuned, paired with sharp cutting tools;
4. Mist cooling is adopted instead of soaking workpieces in massive coolant liquid.
Injection molding fits mass industrial orders for standard flat rings, retaining rings and limit collars. Unit production cost drops significantly with large-volume runs. Complex structures with grooves and steps can be molded in one go, bringing superb dimensional consistency across entire batches.
PEEK injection molding carries inherent difficulties though. Its extremely high melt viscosity leads to poor fluidity. Thin-wall rings often suffer incomplete filling, sink marks and obvious weld lines. Rapid crystallization creates massive internal stress during molding, which causes warpage once products get demolded.
1. Accurate plasticization temperature is controlled between 380℃ and 420℃;
2. mold runners and gate structures are redesigned for better fluid flow;
3. segmented pressure holding plus gradient cooling improves melt filling outcomes, while constant-temperature molds cool down slowly;
4. Gradient annealing is arranged post-molding to fully release molding stress.
- Specialized in R&D and manufacturing of PEEK annular parts
- Integrated capabilities: in‑house material R&D, mold development, precision CNC machining, high‑temperature injection molding
- Expertise in challenging products: high‑precision, thin‑wall, large‑diameter and irregular‑shaped Polyether Ether Ketone Rings
- Optimized processes resolve common industry issues: insufficient melt filling, stress‑induced deformation, poor flatness and inconsistent batch‑to‑batch performance
- Full‑cycle quality control covering raw material procurement, production and post‑treatment
- Only 100% virgin PEEK pellets; recycled or blended materials are prohibited
- COA (Certificate of Analysis) available per batch upon request
- Available material grades:
- Virgin PEEK1000
- 30% glass‑fiber reinforced PEEK (GF30)
- 30% carbon‑fiber reinforced PEEK (CF30)
- PTFE‑modified PEEK
- ESD anti‑static PEEK
- Medical‑grade PEEK
- No bubbles, pinholes, sink marks, cracks, warpage, delamination or prominent weld lines on surfaces
- Inner bore, outer circle and end faces fully deburred, no sharp edges
- Edge chipping, deep scratches and oil contamination are strictly forbidden
- For cleanroom‑grade PEEK rings: surfaces free of dust and fine particle residues
- Standard parts: tolerance ±0.05 mm
- High‑precision custom parts: tolerance ±0.01 mm
- Strict inspection for circularity, flatness, wall‑thickness uniformity and perpendicularity
- Ensure stable assembly clearance to prevent jamming or loose fitting
- Additional flatness inspection for thin‑wall rings to avoid warpage
- All precision‑grade Polyether Ether Ketone Rings undergo gradient annealing after processing
- Eliminate residual stress generated by CNC machining or injection molding
- Prevent shape change, dimensional drift and creep failure under long‑term high‑temperature and continuous‑pressure service
- CNC turning & milling
- High‑temperature injection molding
- Drawing‑based custom manufacturing for global industrial customers
- Product range: virgin, carbon‑fiber‑reinforced and anti‑static modified PEEK components (wear rings, positioning parts)
- Automotive electronics
- Semiconductor transmission equipment
- Marine fluid control systems
- Flexible MOQ
- Reliable lead time
- Custom‑made high‑performance plastic components for worldwide industrial clients
Peek Support Rings retain stable structural strength at elevated temperatures and resist softening, permanent deformation and creep under prolonged thermal stress.
Typical deployment covers automotive electronic assemblies, new energy motor internal structures, high-temperature sensor limit components, industrial heating equipment and aerospace hardware exposed to frequent thermal cycling.
Thanks to a low inherent friction coefficient, PEEK generates limited abrasion debris during continuous motion and avoids oil contamination inside sealed housings. Carbon fiber filled and PTFE-modified variants further boost wear resistance under heavy load scenarios.
Common applications: robot joint wear inserts, transmission thrust rings, rotary wear components for pumps and valves, semiconductor transmission lines and oil-free medical equipment.
Sustained pressure and heat barely trigger permanent deformation in PEEK. Assembly gaps stay consistent over years, effectively stopping axial loosening and positioning offset. This advantage makes them a top choice for precision positioning structures.
Applicable scenarios: limit components for precision instruments, positioning inserts for wafer handling, isolating spacers for optical testing and custom precision tooling parts.
These rings tolerate hydraulic fluids, coolants, mild acids, weak alkalis, organic solvents and coastal salt spray. Free from rusting issues seen on metal parts, they also avoid the swelling and hydrolysis risks typical of general-purpose plastics.
They are widely fitted into chemical pump and valve assemblies, offshore fluid control equipment, marine test instruments and automotive cooling system hardware.
A1: We manufacture PEEK Flat Ring, PEEK Retaining Ring, PEEK Step Ring, PEEK Grooved Ring, PEEK CMP Ring and PEEK Thrust Ring.
A2: Yes. PEEK features inherent self-lubrication. It supports long-term dry friction operation without oil pollution, perfectly fitting clean rooms, medical machinery, food processing equipment and vacuum devices.
A3: Interchangeable usage is not recommended:
1）Never apply PEEK back-up rings as primary sealing elements, otherwise continuous fluid leakage will occur.
2）Do not use PEEK washers to replace gaskets for high-pressure sealing; insufficient flatness will trigger medium seepage.
3）Do not expect PEEK O-rings to deliver the identical elastic sealing effect offered by rubber O-rings.
