Product Name: Seal Hoop / High Pressure Backup Ring (for HP Seal Kit, 15 GPM, 60K) – Part No. 100054-3

Description:
The Seal Hoop 100054-3 is a precision backup ring (often called a "hoop" in waterjet maintenance) designed for the high pressure seal stack in 60,000 PSI (4,137 bar), 15 GPM waterjet intensifier pumps. It serves as a rigid anti-extrusion component installed adjacent to the primary HP dynamic seal. Its primary function is to prevent the softer HP seal material from extruding (flowing) into the clearance gap between the reciprocating plunger and the cylinder bore under extreme pressure cycling.

This component is a critical part of the HP seal assembly; it is typically replaced during every major pump seal change. Correct installation of the backup hoop is essential for maintaining system pressure integrity and extending the service life of the new HP seals.

Applications:

• Positioned within the high pressure cylinder seal stack, adjacent to the HP dynamic seal.

• Provides anti-extrusion support during the compression stroke of the intensifier pump.

• Used during scheduled Major Maintenance or when replacing the HP seal kit (e.g., P/N 100053-3).

• Suitable for 60,000 PSI, 15 GPM waterjet intensifier systems.

Features:

• Rigid Anti-Extrusion Design: Provides a solid mechanical barrier that fills the extrusion gap, protecting the softer primary seal from high-pressure spikes.

• Precision Dimensions: Machined to exact tolerances to fit tightly against the plunger and within the cylinder bore, minimizing any gap that could lead to seal failure.

• High-Strength Material: Manufactured from wear-resistant stainless steel or hardened alloy to withstand extreme pressure without deformation.

• 60,000 PSI Rating: Specifically engineered for the rigorous demands of ultra-high pressure waterjet operation.

• Critical Wear Component: Designed for single use; must be replaced whenever the HP seal is serviced to ensure proper sealing.

Maintenance:

Failure Diagnosis:

• External Water Leakage: Water weeping from the pump weep hole is a primary indicator of seal stack failure, often caused by a worn or missing backup hoop.

• Pressure Drop: Inability to maintain rated cutting pressure suggests the seal stack, including the backup components, may be damaged.

• Visible Damage: When disassembled, inspect the hoop for signs of cracking, deformation, galling, or compression set. Replace immediately if any damage is visible.

Replacement Guidelines:

• Always Replace with HP Seals: The backup hoop is a single-use consumable component. It must be replaced simultaneously whenever the primary HP dynamic seals are serviced. Do not reuse old hoops with new seals.

• Clean Installation: Perform seal replacement in a designated clean area. Ensure hands and tools are free of debris to prevent contamination.

• Lubrication: Apply a thin, uniform coat of manufacturer-recommended high-pressure component grease to the hoop and seals during assembly to prevent dry start-up and damage.

• Proper Orientation: Ensure the backup hoop is correctly seated in the groove, typically positioned on the low-pressure side of the primary seal.

• Full Depressurization: Before any maintenance, fully depressurize the waterjet system, lock out the main power, and follow lockout/tagout procedures.

• Use Correct Tools: Utilize manufacturer-specified seal installation tools (e.g., tool kit #104763) to avoid damaging the new seals or scratching the cylinder bore.