Design and Manufacture High Performance FFKM O-Rings

10 years of experience
Free Customized Design with Technical Support Team
Custom Solution for Different Working Conditions
Fast Proofing and Short Delivery Time
Low Friction and Long Service Life in Demanding Application

Reliable FFKM O-Rings Manufacturer from China

Yoson has more than 10 years of experience with spring energized seals, whether the large or small sizes, and under different working conditions, we can meet your needs. Different Working Conditions, Low Friction, and Long Service Life in Demanding Applications, Fast Customer Service For Your Seal Needs, and a Technical Support Team

If your project or your business needs to import Spring energized Seals, Yoson will be your best choice to manufacture Spring energized Seals orders. Our factory has developed many different grades of materials for different demanding sealing environments. Yoson aims to provide the ultimate protection to critical applications with the perfect spring-energized seals. These seals will fulfill all your requirements and function as you expect them to do so. Get in touch with us now, and let us design your spring energized seals.

FFKM O-Rings Manufacturing Types

General Grade FFKM O-Rings

The V-spring has an asymmetrical profile shape, a solid lip shape, and an optimized front angle that provides good leakage control, reduces friction and extends service life.

High-Temperature FFKM O-Rings

The C-shaped spring provides a constant load that provides a low-friction seal, extending wear life and compensating for smaller deflections or eccentricities of mating parts.

Semiconductor-Grade FFKM O-Rings

H-springs have high helical spring loads and very good seal integrity at low pressures, even in a vacuum. It is suitable for static applications and works especially well in low-speed applications.

Velmo FFKM O-Rings Features

Ultimate Chemical Resistance

Withstand aggressive chemicals including amines, ketones, esters, acids, and strong oxidizers.

Extreme Temperature Stability

Continuous sealing up to +350°C, with reliable performance at both high and low temperatures.

Low Compression Set

Maintains sealing force over long-term use, reducing leakage risk.

Excellent Plasma Resistance

Ideal for semiconductor and cleanroom applications where purity is critical.

Wide Media Compatibility

Performs reliably with fuels, solvents, lubricants, and process fluids.

Upgrade Your Custom FFKM O-Rings with Premium Personalization

Stand out on and off the court with fully customized basketball jerseys tailored to your team’s identity. At Premee, you can personalize every detail — from design, colors, and logos to fabric, printing, and accessories — to reflect your style and spirit. We’re here to help you create uniforms that perform as well as they look.

Velmo FFKM O-Rings Material vs Kalrez® Grades (6375 / 4079 / 7075)

Material	Key Properties	Typical Applications	Limitations / Notes
Generic FFKM O-Rings	Broad-spectrum chemical resistance; withstands extreme environments up to +350°C; available in multiple custom formulations	Semiconductor, aerospace, chemical processing, oil & gas	Performance varies by supplier; requires material verification
Kalrez® 6375	Excellent resistance to a wide range of acids, bases, amines, and steam; temp range: -20°C to +275°C	Chemical processing, acid handling, pharmaceutical plants	Max temp lower than some other grades; premium cost
Kalrez® 4079	Black, low compression set, excellent thermal stability up to +316°C; good in oxidizing environments	Aerospace, oil & gas, high-pressure chemical sealing	Not recommended for steam or hot water; less broad chemical resistance than 6375
Kalrez® 7075	Advanced grade; improved mechanical strength; temp range up to +327°C; very low compression set; excellent overall chemical resistance	Semiconductor, high-purity chemical handling, plasma resistance applications	Highest cost grade; typically used in most demanding applications

Free Technical Material Consulting

This type of seal is precious in environments where the leakage is not an option. The best examples are cryogenics, space launch vehicles like thrusters, valves, fuel tanks, and high-temperature jet engines. Here are other industries where spring-energized seals are commonly used:

Chemical processing
Gas or Oil industry
Automotive
Military
Energy
Medical
Military
Aerospace

No MOQ, Rapid Prototyping

Chemical processing
Gas or Oil industry
Automotive
Military
Energy
Medical
Military
Aerospace

Performance Seals Manufacturer FAQ

What materials can you provide for the seals?

We can provide FFKM, FKM, HNBR, EPDM, Aflas, VMQ, PU, PTFE, PEEK, UHMWPE, Rulon and so on.

How about your design ability?

We have our design department and have offered design services for thousands of cooperative partners. OEM accepts and
offers a confidentiality agreement. a “business secret contract” for your design safe.

For standard sizes product, are they in stock and are the sizes available?

Yes. We have built up a complete inventory. We have sizes and molds for different standard systems in stock so that we can ship quickly.

Which kind information need for quotation?

Sample photo with size or 2D/3D design
Product material
The quantity

How about the samples?

After mold finished, We will make some samples for you to check as soon as we finish the mold.

What’s your delivery time?

For regular products, we keep them in stock. The specific delivery time depends on the items and the quantity of your order, usually 7~25 days.

Looking for FFKM O-Rings Manufacturer in China?

Your inquiry will be replied within 24 working hours, and we respect your privacy.