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Saint-Gobain's OmniSeal® Spring-Energized Metal-Band Seal Has Been Qualified for Aircraft Micro Fuel Pumps

Garden Grove, CA, February 02, 2014 --(PR.com)-- Saint-Gobain Seals Group’s OmniSeal® spring-energized metal-band seal has been qualified as a dynamic seal in micro fuel pumps for the aerospace industry. Micro pumps are designed to pump various types of fluids at high flow rates while requiring minimal housing space and operate by either electric motor or magnetic drive. Applications for these miniscule pumps are found in aerospace, laboratory systems and fuel cells. Depending upon the size and pressure, they are able to pump from ten to hundreds of milliliters of fluids per minute and incorporate a variety of gear combinations based on speed requirement and fluid compatibility. The pumps range from an inch up to a few inches in length; most are less than an inch in diameter.

Many micro pumps use elastomeric seals; however, as operating conditions become extreme with low temperature, aggressive chemicals, high speed and minimal wear requirements, these seals fail prematurely. In order to solve these challenges, the Seals Group has developed a custom version of their OmniSeal® APS (Advanced Pitch Spring) seal (an extended heel design is shown here). The use of this seal has resulted in minimal seal and shaft wear as well as negligible leakage compared to traditionally used FKM U-cup type seals, surpassing the standard seal life requirement of 500 hours.

This custom APS seal is a very small shaft seal designed for dynamic sealing of motors at very high rpm and includes an aluminum metal band, a spring and a Fluoroloy® jacket. The polymeric Fluoroloy® jacket’s purpose is to seal against the shaft as well as the housing. The metal band prevents anti-rotation of the seal to ensure a static seal on the housing side, offering the additional advantage of providing effective housing sealing at low temperature. The spring offers a very light load and ensures leakage-proof sealing on the shaft side, where the shaft can be less than 1/8” in diameter.

In a typical operating environment, the shaft operates around 14,000 rpm which is equivalent to 458 ft/min (2.3 m/s) on a 1/8”shaft. The operating differential pressure ranges from 100 psi to 250 psi (689 kPa to 1,724 kPa) when sealing media such as jet propellant fluid and kerosene. In addition to the operating temperature ranging from -35°F to 185°F (-37°C to 85°C), the seal is required to be wear-resistant against a hard steel shaft. To withstand these conditions, a lubricated proprietary Fluoroloy® material with excellent wear characteristics and low coefficient of friction (CoF) is used.

Aside from the APS design, OmniSeal® spring-energized seals are available in multiple designs such as 103A, Spring Ring II, 400A, RP II and RACO™ 1100A and are also offered in various custom designs. These designs include seal jackets in various Fluoroloy® materials and springs in various configurations. The Seals Group’s sealing solutions have been used in a variety of applications such as the Delta IV heavy rocket with a reconnaissance satellite, the world’s first subsea gas compression station, harmonic scalpels, chemical analyzing equipment, and environmentally-friendly industrial dyeing process machines.

Please contact the Saint-Gobain Seals Group at sealsmarketing@saint-gobain.com for assistance with unique applications or visit their website, www.seals.saint-gobain.com for more information on spring-energized seals and other sealing and polymer solutions.

About Saint-Gobain Seals Group (www.seals.saint-gobain.com)
Saint-Gobain Seals Group is a business unit under Saint-Gobain Performance Plastics’ Engineered Components division; our parent company is one of the world’s top 100 industrial groups. With more than 50 years of manufacturing experience and an established global presence (with strategic sites in Garden Grove, California, USA; Kontich, Belgium; and Minhang, Shanghai, China), we offer a diverse range of innovative sealing and polymer solutions:

· OmniSeal® Spring–Energized Seals
· OmniLip™ PTFE Rotary Shaft Seals
· OmniFlex™ Fluoroelastomer Seals
· OmniShield® EMI / RFI Shielding Solutions
· Rulon® High-Performance Fluoropolymer Compounds
· Meldin® 7000 Thermoset Polyimide Materials
· Meldin® HT High-Performance Thermoplastic Materials

Other products include Fluoroloy® (high-performance custom-formulated compounds and alloys), cup seals, hydraulic seals, metal seals, v-packings, piston rings, Marathon® (valves and vacuum pump diaphragms), Transband® (PTFE creepage band), custom parts, polymer bearings and stock shapes.

The majority of seals and polymer components manufactured are custom designed and matched with the best materials to optimize their performance in various applications and markets.
Contact Information
Saint-Gobain Seals Group
Rebecca Phan
800-544-0080
Contact
seals.saint-gobain.com
Kathy Rowe, rowesmc@neo.rr.com

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