Laminar Rings for Superior Sealing

High-performance metallic spiral retaining rings designed for bearings and radial lip seals. Engineered to DIN 34110 standards with labyrinth sealing technology that uses centrifugal force to redirect liquids.

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About Shunhua Engineering

Shunhua Engineering Co., Ltd. is a leading manufacturer of laminar seal rings based in Yangzhou, Jiangsu, China. Founded on the principles of quality, service, and value, we have grown into one of the world’s most trusted suppliers of precision sealing solutions.

With over 8,000 square meters of manufacturing space and a dedicated R&D team, we’ve mastered the core processes of coiling and heat treatment. Our laminar rings match the quality of German and American brands — at just one-third the cost.

8,000+

m² Factory Space

30%

Global Exports

Our Laminar Ring Series

We manufacture both single-wound (FK3) and double-wound (FK6) laminar rings, each designed for specific sealing requirements and environmental conditions.

FK3 Series – Single Wound

Ideal for basic protection against dust and environmental moisture. Used primarily in bearing applications where moderate sealing is required.

Types: FK3 AS, FK3 ASK, FK3 IS, FK3 ISK
Set Configurations: 3 or 5 rings per set
Installation: IS and ISK easier to fit
Performance: Good labyrinth effect, cost-effective

Best for shaft-side installation and light-duty environments.

FK6 Series – Double Wound

Offers superior sealing performance, especially under grease exudation, dust, dirt, and splash water exposure.

Types: FK6 ASD, ASKD, ISD, ISKD
Set Configurations: 2 or 3 rings per set
Advantages: No gap, higher retention force
Performance: Enhanced sealing due to double winding

Recommended for high-performance applications and front of radial lip seals.

Popular Laminar Ring Models

All models manufactured to DIN 34110 standards. Custom materials (e.g., SS304, SS316Ti) and dimensions available.

FK3 IS

Single wound, 3-ring set for shaft. Easy installation, dust/moisture protection.

Config: 3 rings/set | Material: SS304 (customizable)

FK3 AS

Single wound, 3-ring set for bore. Balanced sealing and retention.

Config: 3 rings/set | Standard DIN 34110

FK3 ISK

5-ring set (3 shaft, 2 bore). Enhanced labyrinth effect, easy fit.

Config: 5 rings/set | High sealing efficiency

FK3 ASK

5-ring set (2 shaft, 3 bore). Optimized for bore-side sealing.

Config: 5 rings/set | Balanced dual protection

FK6 ISD

Double wound, 2-ring set. No gap, high retention, easy installation.

Config: 2 rings/set | Superior dust/water resistance

FK6 ASD

Double wound, 2-ring set for bore. High sealing under grease pressure.

Config: 2 rings/set | Radial lip seal compatible

FK6 ISKD

3-ring set (2 shaft, 1 bore). Maximum sealing with ease of fit.

Config: 3 rings/set | Premium protection

FK6 ASKD

3-ring set (1 shaft, 2 bore). Ideal for high-pressure environments.

Config: 3 rings/set | Double wound, no gap

Why Choose Our Laminar Rings?

Same Quality as German Brands

Our coiling and heat treatment processes are perfected to match the performance and durability of leading European laminar rings.

One-Third the Cost

Thanks to our efficient supply chain and strategic location near Shanghai, we deliver premium quality at a fraction of the price.

Custom Orders & Fast Quoting

Tell us your specs (e.g., FK6 ISD 170/6.0×2.0, SS304, 1000 sets) — we quote within 8 hours and manufacture to order.

Frequently Asked Questions

What is a laminar ring?

A laminar ring is a metallic spiral retaining ring made from coiled flat wire. It functions as a labyrinth seal, using centrifugal force to redirect penetrating liquids away from sensitive components like bearings.

What’s the difference between FK3 and FK6?

FK3 rings are single-wound and offer basic protection against dust and moisture. FK6 rings are double-wound, providing higher retention force, no gap, and superior sealing — especially under grease exudation and splash water.

Are your rings DIN 34110 compliant?

Yes, all our laminar rings are manufactured to DIN 34110 standards, ensuring compatibility and performance consistency across global applications.

Can I request custom materials?

Absolutely. While we default to SS304, we can produce rings in higher-grade materials like SS316Ti upon request for enhanced corrosion resistance.

How long does production take?

Since we manufacture to order, lead times vary by quantity and complexity. Contact us with your specs for an accurate timeline.

Get in Touch

Ready to order or need a quote? Contact us directly with your specifications.

Contact Information

Contact: Gus Wu
Address: Zhenwu Industry Zone, Jiangdu District, Yangzhou, Jiangsu, China. 225264
Email: [email protected]
Phone/WeChat: +86 18112146252
Skype: live:8c9a4de0df7a5532
Working Hours: Mon-Fri: 9:00–17:00 | Weekends: 11:00–15:00

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