RING - BACK UP (CAT CT19370C35)

CT19370C35: A worn back-up ring can allow seal extrusion under pressure, leading to fluid leakage and reduced system efficiency. This aftermarket replacement part references the CAT catalog number CT19370C35. The ring functions as a rigid support that prevents the seal from deforming into the clearance gap. In high-pressure applications, a failed back-up ring often results in sudden seal blowout and contamination of the fluid. Keeping a back-up ring in sound condition helps maintain consistent sealing force and prevents premature seal wear. Verify the serial number or application, then call (562) 693-7748. The part is a retaining ring type, commonly used in static sealing arrangements.

Part number variants: CT19370C35, ct19370c35