ASME · FDA · USP Class VI

China FFKM O‑Ring Manufacturer – Perfluoroelastomer Seals for Extreme Chemical & Temperature Resistance

Kaxite Sealing is a leading FFKM O‑ring supplier in China, offering high‑temperature perfluoroelastomer O‑rings, low‑outgassing seals, and chemical‑resistant FFKM rubber for semiconductor, pharmaceutical, oil & gas, and aerospace applications. 15+ years of compounding expertise, export to 60+ countries.

⬤ MOQ: 100 pcs ⬤ Lead Time: 15‑30 days ⬤ FOB Ningbo / EXW / CIF ⬤ Custom Compounds ⬤ Free Sample

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15+

Years Compounding

60+

Countries Served

300°C

Max Service Temp

ISO 9001

Certified Quality

FDA

USP Class VI

NORSOK

M‑710 Approved

100%

Traceability

FFKM Sealing Solutions by Industry

Engineered perfluoroelastomer O‑rings for extreme environments – chemical, thermal, and high‑purity.

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Semiconductor

Low‑outgassing, high‑purity FFKM O‑rings for wafer processing, etching, and CVD equipment.

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Pharmaceutical & Biotech

FDA‑compliant, USP Class VI FFKM seals for sterile processing, drug delivery, and bioreactors.

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Oil & Gas

NORSOK M‑710 approved FFKM O‑rings for sour gas, downhole tools, and high‑pressure valves.

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Aerospace & Defense

High‑temperature, low‑outgassing seals for fuel systems, hydraulic actuators, and engine components.

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Chemical Processing

Chemically resistant FFKM O‑rings for aggressive acids, solvents, and high‑temperature reactors.

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Custom OEM / ODM

Custom FFKM compounds, sizes, and hardness (Shore A 60‑90). Prototypes and bulk production.

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Why Choose Kaxite for FFKM O‑Rings?

✅ In‑house FFKM compounding & molding
✅ ISO 9001:2015 certified manufacturing
✅ FDA, USP Class VI, NORSOK M‑710 approved
✅ 15+ years of perfluoroelastomer expertise
✅ Full traceability with MTC per EN 10204 3.1
✅ Custom hardness, color, and size (AS568, metric)
✅ Competitive factory‑direct pricing
✅ 24/7 technical support and global logistics

ISO 9001 FDA NORSOK USP VI

FFKM Material Capabilities

🔹 Temp Range: -20°C to +300°C (continuous)
🔹 Hardness: Shore A 60‑90 (custom)
🔹 Chemical Resistance: Acids, bases, solvents, steam
🔹 Low Outgassing: Ideal for semiconductor & vacuum
🔹 Sizes: AS568, metric, and custom cross‑sections
🔹 Colors: Black, white, brown, custom

Full Custom OEM/ODM Rapid Proto

Frequently Asked Questions

Quick answers about FFKM perfluoroelastomer O‑rings.

Q: What is FFKM and how does it differ from FKM?

A: FFKM (perfluoroelastomer) has a fully fluorinated backbone, offering superior chemical and temperature resistance compared to FKM. It withstands aggressive media and temperatures up to 300°C.

Q: What industries use FFKM O‑rings?

A: Semiconductor, pharmaceutical, oil & gas, chemical processing, aerospace, and food & beverage – wherever extreme conditions demand premium sealing.

Q: Can you manufacture custom FFKM compounds?

A: Yes, we develop custom formulations for specific temperature, chemical, and mechanical requirements. Hardness, color, and cross‑section can be tailored.

Q: What is the typical lead time for FFKM O‑rings?

A: Standard sizes ship in 15‑20 working days. Custom compounds may take 25‑35 days. Express service available on request.

Q: Do you provide material test reports and certificates?

A: Absolutely. Every batch includes an MTC (EN 10204 3.1). We also support third‑party inspections (SGS, BV) and offer full material traceability.

Q: Can I get a sample before placing a bulk order?

A: Yes, free samples are available for standard and custom compounds. Contact our sales team with your size and compound requirements.

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Need High‑Performance FFKM O‑Rings at Factory Prices?

Tell us your size, compound, and quantity – our engineering team will respond within 24 hours with a tailored quote and technical support.

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📞 +86-574-87527771 ✉️ kaxite@seal-china.com 💬 WhatsApp

🏭 In‑House Compounding ✅ FDA & NORSOK 📦 MOQ: 100 pcs 🚢 Global Shipping

About Us

Ningbo Kaxite Sealing Materials Co., Ltd was founded in 2009 and is dedicates to global fluorinated elastomer business. Our office locates at Ningbo, China and tightly cooperates with local manufactures in order to provide the best solution to our customers. Ningbo Kaxite Sealing Materials Co., Ltd is not only a FFKM/FKM compounder and we expect ourselve to offer molded parts, knowledge and experience in order to help our customer finding thier best products to save more time and money. Our extensive product lines offer various selections in FKM (fluoroelastomer)/ FFKM (perfluoro-elastomers) together with a complete list of molded parts. We also take customized order to meet customer’s special need in FKM/FFKM compound and parts. Based on our years’ of experience in composition FKM and FFKM, we have confidence to offer our customer a competitive price with quality assurance. Ningbo Kaxite Sealing Materials Co., Ltd is more than just a compounder but also a trading company; our vision is to be a solution provider. We manufature our own products and also develope new products for different working environments. It is always an honor to grow with our customers and we also believe that the best service comes together with our expertise in fluorinated elastomer.

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