Product Details : Solid Backup Ring 4.750" x 5.250" x 0.085" - Polyurethane
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Part No: 8-427/U
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Product Category: O-Rings
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Product Type: Solid Backup Ring
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Series: -XXX/U
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Dash No.: -427
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Material(s): Polyurethane
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Material Code: AU
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Durometer: 95A
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Temperature Range: -60°F to +250°F (-51°C to +121°C)
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Surface Speed: < 1.6 ft/s (0.5 m/s)
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System Of Measurement: Inch
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Dimensions: 4.750" x 5.250" x 0.085"
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Nominal I.D.: 4.750"
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Nominal O.D.: 5.250"
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Nominal Width (W): 0.250"
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Actual Thickness (T): 0.085"
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Actual Width (W): 0.236"
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Details:
•Back-Up Rings are predominantly used in conjunction with O-rings for both static and dynamic sealing applications
•They prevent the O-ring from extruding when it is subjected to high pressures, or when clearance gaps are excessive
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*Photos for reference purposes only.