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Ultimate Chemical Resistance: Withstands almost all aggressive fluids, including concentrated acids, bases, ketones, and solvents.
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Extreme Temperature Tolerance: Reliable performance from -20°C up to +320°C (continuous), maintaining elasticity where standard FKM fails.
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Exceptional Compression Set: Retains sealing force under rapid thermal cycling and high-pressure environments.
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AS568 Compliance: Manufactured strictly to AS568 dimensional standards, ensuring perfect interchangeability.
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Ultra-Low Outgassing: Ideal for high-purity applications like semiconductor manufacturing and pharmaceutical processing.
FFKM O-Rings
FFKM O Rings High Temperature Acids Chemical Resistant AS568 Seals
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Premium FFKM (Perfluoroelastomer) O-Rings: The Ultimate Sealing Solution
When standard elastomers fail, our premium FFKM O-Rings deliver unparalleled performance. As the highest-tier elastomeric sealing material available today, FFKM provides extreme thermal stability, near-universal chemical inertness, and exceptional vacuum capabilities, making it the definitive choice for the most demanding industries (Automotive, Chemical Processing, Aerospace, and Semiconductor).
1. Superior High-Temperature Resistance
FFKM seals significantly outperform standard FKM (Viton®) in extreme heat.
- Compression Set: At 240°C, standard FKM and other rubbers suffer from a rapidly increasing deformation rate over time. In contrast, FFKM O-Rings maintain a compression set below 50%, ensuring a long-lasting, reliable seal.
- Extreme Heat: While FKM degrades, FFKM retains its rubber-like elasticity even at continuous temperatures of 300°C, with a maximum temperature resistance of up to 325°C.
2. Exceptional Chemical Resistance
Standard fluorinated rubbers cannot handle aggressive chemicals. FFKM, however, displays outstanding stability in environments where other materials fail, including ethers, amine compounds, ketones, oxidizers, organic solvents, fuels, acids, and alkalis.
- Chemical Spectrum: FFKM is highly resistant to over 1,600 (up to nearly 2,000) types of chemical media, including organic acids, bases, alcohols, nitrogen compounds, hydrocarbons, halogenated hydrides, furans, aldehydes, and oils.
- Real-World Test: After 6 months of immersion in a mixed solution of toluene, acetone, and dichloromethane, FFKM O-Rings exhibit almost zero volume change, whereas other rubber seals are severely deformed or destroyed.
3. Troubleshooting: Causes of Surface Cracking
Surface cracking in FFKM O-Rings can be categorized into two phases:
- Pre-Vulcanization Cracking: Typically caused by poor compound formulation (e.g., excessive fillers and insufficient processing oils).
- In-Service Cracking: Usually a result of improper application, such as exceeding pressure limits or using the seal with incompatible chemical solvents. (Note: Always consult our engineers for proper material matching).
4. High-Vacuum Performance & Versatility
- Ultimate Vacuum Sealing: FFKM is the only elastomer capable of maintaining a reliable seal in high-vacuum conditions down to 1.33 × 10⁻⁷ Pa. Other rubber materials cannot be used for sealing in such environments.
- Inherent Properties: Fluorinated elastomers offer exceptional flame retardancy, gas impermeability, high-temperature resistance, oil resistance, solvent resistance, and weatherability.
Correct measure the O-Rings Size
AS568 Standard: Cross Section (CS) Dimensions in mm 1.78mm / 2.62mm / 3.53mm / 5.33mm / 6.99mm…
GB3452.1 Standard: Cross Section (CS) Dimensions in mm 1mm / 1.5mm / 1.8mm / 2mm / 2.4mm / 2.5mm / 2.65mm / 3mm / 3.5mm / 4mm / 5mm / 5.3mm / 5.7mm / 6mm / 7mm / 8.6mm…
Inner Diameter (ID) Range: 2mm to 4000mm
1.Do not measure O-rings with a ruler.
2.Use a caliper to accurately get ID, OD and cross-section CS.
3. Rubber O-rings deform easily. Accurate measurement ensures proper fit and prevents leakage.
FFKM O Rings Applications
- Semiconductor: Plasma etching, CVD, and high-purity gas delivery systems.
- Chemical Processing: Pumps, valves, and reactors handling aggressive acids and solvents.
- Oil & Gas: Downhole tools and high-temperature/high-pressure (HTHP) equipment.
- Pharmaceutical & Food: High-purity, non-contaminating seals for aseptic processing.
Packing /Payment/Shipping service
- Package:We provide standard cartons, pallets and wooden cases. Custom packaging is available upon request to protect goods well for different shipments.
- Payment Methods:Multi-currency settlement (CNY, USD, EUR, etc.). Multiple payment options including T/T, PayPal. Local bank transfer is available for some countries for faster transactions.
- Delivery Method:We offer international express, air freight, sea freight and railway transport. You can also appoint your own forwarder for flexible delivery arrangements.
OEM and ODM Service
Jinnai Seal provides customized rubber sealing solutions tailored to diverse industrial needs. Our customization services cover rubber materials, dimensions, shapes and designs, colors, hardness, surface finishes, mold development, and packaging. We support both standard specifications and custom manufacturing based on your drawings, samples, and application requirements, delivering flexible and reliable sealing products for a wide range of industries.
Why Choose Jinnai Seal?
Factory Advantages
- R&D Strength Focus on R&D and manufacturing of rubber seals for 20 years.
- Vulcanization Workshop 200+ advanced equipment, integrated molding & mass production.
- Mold Workshop Accurate dimension, consistent quality, fast delivery.
Product Advantages
- Finished Goods Warehouse 3000+ O-ring specifications available for same-day shipment.
- Customized Products Non-standard mold design, professional R&D team, 100% inspection before delivery,
- Factory Strength Large-scale production, stable quality, reliable delivery and cost-effective solutions.
Quality Assurance
- IATF16949 IATF16949 quality system certification makes our company more competitive and enables us to serve customers better.
- ISO9001 We have obtained ISO9001 certification since 2009. We adhere to the quality-first concept and implement the essence of the system.
- Premium Quality Focus on the research and development of special rubber sealing parts.
Service Advantages
- Technical Support 24-hour customer service, professional technical team, on-site solution support.
- After-sales Guarantee Comprehensive after-sales service, reliable quality assurance, customized solutions.
Jinnai Rubber Seals Product Catalog
Jinnai Seal specializes in manufacturing a wide range of sealing products, including bonded seals, rubber O rings, custom rubber seals, rubber balls, gaskets and washers, and oil seals. We offer various materials, sizes, colors, and hardness options to meet diverse industrial requirements. With flexible customization and a focus on product quality, we provide reliable sealing solutions for automotive systems, hydraulic and pneumatic equipment, pumps, valves, chemical processing, and general industrial applications. Standard sizes and customized products are available to meet your specific needs.
FAQs-
Will standard rubber O-rings swell or dissolve in aggressive solvents and acids?
Yes, standard rubber seals often fail in such environments. However, our FFKM O-rings feature a fully fluorinated structure that provides extreme chemical inertness. They will not swell, dissolve, or degrade, ensuring zero leakage even in the harshest chemical environments.
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How do FFKM seals perform under continuous high temperatures above 250°C?
Standard seals degrade rapidly at these temperatures, causing unexpected equipment downtime. Our FFKM O-rings are engineered with a specialized cross-linking structure that resists thermal degradation. They can withstand continuous temperatures up to 320°C while maintaining their elasticity, preventing catastrophic seal failure.
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Do you offer custom AS568 sizes or OEM manufacturing for FFKM O-rings?
Yes. Finding specific non-standard sizes in the right material can be difficult. We stock a comprehensive range of AS568 standard sizes in FFKM for immediate delivery. Additionally, we provide fast-turnaround OEM/ODM custom machining services to manufacture O-rings based exactly on your drawings.
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FFKM materials are more expensive upfront than standard rubber. Why should I choose them?
While the initial cost is higher, FFKM drastically extends maintenance intervals, preventing expensive equipment damage and costly downtime. To prove the long-term ROI, we offer free samples for your testing and validation before you place a bulk order.
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Are your FFKM O-rings suitable for high-purity applications like semiconductor or pharmaceutical processing?
Absolutely. For these critical environments, contamination is a major risk. We offer ultra-clean, post-cured FFKM compounds with extremely low outgassing and extractables. They meet USP Class VI and FDA standards, ensuring they are perfectly suited for high-purity and sterile applications.
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How do FFKM O-rings resist compression set after rapid thermal cycling?
Permanent deformation is a common issue with standard seals after thermal shock. Our FFKM formulations are specifically designed for superior compression set resistance. They recover rapidly even after rapid decompression and thermal cycling, ensuring a reliable and lasting seal over repeated cycles.
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