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Saint-Gobain Seals’ Rulon® and Fluoroloy® Polymer Sliding Tape Protect Key Structures in Japan from Earthquakes

Garden Grove, CA, March 15, 2015 --( Saint-Gobain Seals’ Rulon® and Fluoroloy® proprietary blended PTFE materials have been utilized in seismic base isolation systems for several large buildings and key structures in Japan, representing a significant technology for the highest level of protection from earthquake destruction. The systems are installed between the ground and upper structure and have been one of the most powerful tools of earthquake engineering, having the potential to benefit people in all earthquake-prone regions of the world.

By their response to an earthquake impact, all isolation units may be divided into two basic categories: shear units and sliding units. Saint-Gobain Seals’ polymer materials are used for the latter as an ideal sliding tape due to their very low friction, high resistance to wear and resistance to deformation. When an earthquake occurs and the shaking intensifies, the sliding seismic isolator (a laminated bearing with a sliding mechanism) works to absorb strong tremors. The idea behind base isolation is to detach (isolate) the building from the ground so that earthquake motions are not transmitted up through the building or are greatly reduced.

As an earthquake prone country, Japan has been concentrating on base isolation research and development for almost 20 years; their first large base-isolated building was completed in 1986. Seismic base isolation engineering can be seen on several well-known Japanese structures that use Saint-Gobain’s Rulon® and Fluoroloy® products such as the world’s largest suspension bridge where it protects the cable connection underneath the road from earthquake and wind/wave vibration. One of their most famous baseball stadiums adopted a seismic isolation system with the Rulon® and Fluoroloy® products to its roof over the grandstand, which has a no-pillars structure. These are two examples of larger-use applications; however, the materials have also been successful in the building of important, smaller facilities such as hospitals. The use of Saint-Gobain Seals’ products in seismic base isolation systems is not just limited to commercial structures but also applied in high-end residential buildings (common protection for housing throughout Japan).

As there are over 100 standard Rulon® and Fluoroloy® grades, they have been used worldwide in a variety of markets as they withstand a variety of harsh environments such as extreme dryness, cryogenic temperatures, water, steam and hydrocarbon fuel. Some applications include Rulon® J glide rings that improve the performance of high-end rear shock absorber on bicycles, Rulon® J sliding elements that support the bogie of trains in Washington DC, Rulon® 123 cup seals in metering pumps, bonded Rulon® bearings for jet engine thrust reverser and missile launch systems, and Fluoroloy® seals in chemical analyzers.

To learn more about Saint-Gobain Seals’ Rulon® and Fluoroloy® product lines, other product lines and its strategic business unit, visit, follow their Twitter(@SGSeals) or connect on LinkedIn.

About Saint-Gobain Seals (
Saint-Gobain Seals is a strategic business unit under Saint-Gobain Performance Plastics’ Engineered Components SOA (sector of activity); our parent company, Saint-Gobain, 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
• 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), 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.
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Saint-Gobain Seals
Rebecca Phan
Kathy Rowe,

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