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7K single-acting piston cup with supporting brass discChesterton® 7K is a single acting, piston cup with a positive, flared lip design to optimize sealing forces. Each seal is individually manufactured and provides excellent performance in for use in hydraulic and pneumatic applications. The 7K compression molded design is supplied with a supporting metallic brass disc, molded into the base of the seal to improve seal performance. The rigid base provides a stable, non-distorting, anti-extrusion resistant seal.
• Positive, flared lip design optimizes sealing forces.
• Supporting metallic brass disc, improves seal performance
• Long life cup will not swell, deform, drag or bind. | 
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| | Size Range | 25 to 711 mm
(1 to 28 inch) |
| | Temperature Range | -50 to 85 C
(-60 to 185 F) |
| | Pressure Range | to 207 bar
(to 3,000 psi) |
| | Speed Range | to 0.9 m/s
(to 185 ft/min) |
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