Severe service seals in larger sizes

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 285 KB
• Volume: 1997
• Category: Article
• ISSN: 1350-4789
• DOI: 10.1016/s1350-4789(97)84180-3

✦ Synopsis

Dynamic sealing

Economos UK to meet the needs of especially strenuous dynamic conditions.

The Seal-Jet square section O-ring was design engineered for increased efficiency in rod and piston applications where conventional O-rings can be unsuitable. Evolved from its existing and successful elastomeric square section O-ring, this latest version, the H-Ecopur square section O-ring --code named the R-14 --provides even greater stability under extreme pressure conditions.

The new R-14 is stable to 400 bar in dynamic conditions with industry standard extrusion gaps. Conventional O-rings would need an anti-extrusion ring in applications where pressures exceed 100 bar. Economos is able to further modify the R-14 seal, upon request, to resist even greater pressures.

Friction has also been reduced in the R-14 by the application of interior and exterior chamfered diameter edges. As a result, it does not roll or twist, but instead has less dynamic back-lash than a conventional O-ring at the same extrusion gap. The good sliding properties of H-Ecopur and the use of lead-ins on the seal's dynamic surface have also contributed to its reduced frictional properties. The combination of these design features makes the R-14 considerably more stable under varying or higher pressure conditions.