An External Retainer Ring, also known as an external snap ring, is a type of fastener that features an external design, allowing it to fit around the outer circumference of the cylinder. Its main function is to securely hold and position other parts, preventing axial movement and ensuring proper alignment.Attributes:• Withstand high rotational speeds and loads without slipping • Provides a high degree of precision and accuracy in retaining partsApplications:An External Retainer Ring is used to provide a uniform shoulder for retaining parts in the Hydraulic Cylinder.