Full Contact Springs Overview

Full Contact Spring is also known as: Raco Spring,Continuous Contact Spring

This heavy duty, high load Full Contact Spring provides continues spring contact along the entire sealing lip. Its use is recommended for extreme static sealing conditions such as those involving cryogenic fluids, ultra-high vacuum and positive sealing of light gases. Standard cross a section designs are available and produced in continues length coil; shipped to you ready to cut and rolled to your final center lines. This spring must be welded after it is placed in the seal jacket.

If you do not see a Full Contact that fits our needs on this page please view our Non Standard Custom Spring page for addition options.

Materials available include:

Stainless Steels
301, 302, 304, 316, 17/7PH
Exotic Alloys
Inconel (grades 600, 718, X-750)
Monel (grade 400)
Elgiloy/Phynox to AMS5833. Also available compliant to NACE MR0175.
Hastelloy (grades C22, C276, C2000)

Full Contact Springs Dimensional Data

The RACO Spring is a high load, full contact spring used in specialist harsh service conditions.

The high load makes them well suited to service in cold and cryogenic applications and the continuous band contact means that spring force is evenly distributed around the circumference of the sealing lip.

Initially developed for efficient and consistent functionality in the extreme environments of the gas and oil industry, turbine engines, missiles and rockets, Raco Springs are now proven for use in a wide range of applications.”

Formed Cross Section

Flat Pattern (Prior To Forming)

Series A B C D E F J K L
HD-FCS-200 .050″ .050″ .039″ .202″ .280″ .024″ .136″ .015″ .134″
HD-FCS-300 .050″ .050″ .0525″ .312″ .417″ .030″ .190″ .020″ .180″
HD-FCS-400 .050″ .050″ .071″ .377″ .519″ .060″ .231″ .020″ .260″
HD-FCS-500 .050″ .050″ .105″ .495″ .705″ .120″ .285″ .025″ .395″
Series A B C D E F J K L
HD-FCS-200 1.27 MM 1.27 MM 0.99 MM 5.13 MM 7.11 MM 0.61 MM 3.45 MM 0.36 MM 3.40 MM
HD-FCS-300 1.27 MM 1.27 MM 1.33 MM 7.92 MM 10.59 MM 0.76 MM 4.83 MM 0.51 MM 4.57 MM
HD-FCS-400 1.27 MM 1.27 MM 1.80 MM 9.58 MM 13.18 MM 1.52 MM 5.87 MM 0.51 MM 6.60 MM
HD-FCS-500 1.27 MM 1.27 MM 2.67MM 12.57 MM 17.91 MM 3.05 MM 7.24 MM 0.64 MM 10.03 MM

Contact US

Get in touch with a member of our team. Fill out the form below and we will connect you to an expert who can provide product quotes and assist in design solutions that deliver the performance, durability, and value you need.

Stress: 1st floor, building 7, changchong Industrial Park, Beihu District
City: Chenzhou
Province: Hunan
Zip Code: 423000
Country: China

Tel: +86 13169905499

Whatsapp: +8613169905499

Wechat: Sunnyyu960901

Email: sunny@handaspring.com

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Spring Energized Seals
Full Contact Springs
Full Contact Springs - Spring Energized Seal Manufacturing- Handa Spring
Full contact springs, sometimes referred to as Raco springs or continuous contact springs, provide continuous spring contact throughout the full circumference of the sealing lips. Our heavy-duty full contact springs are capable of high loads. Full contact springs are recommended for applications in extreme environments like those involving cryogenics, vacuum, and light gases at low pressures.
Hunan Handa Electronic Technology Co., Ltd
Hunan Handa Electronic Technology Co., Ltd has been focusing on the research and development and production of precision springs for 10 years, and is a professional ODM/OEM spring manufacturer. Our products cover all kinds of hardware springs, medical springs, toy springs, seal springs. However, our core business lies in the manufacturing of pan-plug seal springs.(Including cantilever V springs,helical springs,full contact springs,detached leg springs,canted coil springs ect.)
Handa Spring
Professional Chinese manufacturer of spring energized seal components: High-precision Canted Coil, Cantilever U/V, Detached Leg (Fishback), Full Contact (Raco) & Helical Springs. Made with Inconel/Hastelloy/stainless steel for -200°C to 800°C extreme environments. Custom solutions for aerospace, medical & semiconductor industries.