Product ID: 11-012450 – UHDE waterjet pump Seal

Description:
This component is a high-pressure seal designed for UHDE brand waterjet intensifier pumps . It serves as a critical sealing element within the high-pressure cylinder assembly, creating a dynamic seal between the reciprocating ceramic plunger and the cylinder bore. The seal is manufactured from composite materials and is engineered to withstand ultra-high pressure operation up to 420 MPa (approximately 60,000–90,000 psi) .

These seals are precision-machined to ensure proper fit and leak-free operation under extreme pressure cycling. They are consumable components that require periodic replacement as part of routine waterjet pump maintenance .

Applications:

• Used as a dynamic seal within the high-pressure cylinder of UHDE waterjet intensifier pumps

• Installed around the reciprocating ceramic plunger to prevent high-pressure water bypass

• Suitable for ultra-high pressure waterjet systems operating at 60,000–90,000 PSI (approximately 4,137–6,200 bar) 

• Compatible with UHDE brand waterjet cutting systems and intensifier assemblies

Features:

• High-Pressure Rating: Engineered for continuous operation at pressures up to 420 MPa / 60,000 PSI 

• Composite Material Construction: Manufactured from wear-resistant composite materials providing excellent sealing performance and durability

• Wear Resistance: Designed to withstand the high-velocity water flow and reciprocating motion of the plunger

• Corrosion Resistant: Formulated to resist degradation from water exposure and water treatment additives

Maintenance:

• Expected Service Life: Under normal operating conditions with proper water quality, the seal typically provides 300–1,000 hours of service life. Actual lifespan depends on water flow, pressure, temperature, and water quality .

• Performance Monitoring Indicators: Replace the seal assembly when any of the following occur:

• Drop in cutting pressure

• Visible water leakage from the pump weep hole

• Inability to maintain rated cutting pressure

• Water contamination in hydraulic oil

• Installation Precautions:

• Thoroughly clean the cylinder bore and plunger surface before installing new seals

• Lubricate seals with high-pressure grease during installation to prevent dry startup

• Use proper installation tools to avoid damaging seals during assembly

• Full Depressurization: Always fully depressurize the waterjet system and follow lockout/tagout procedures before replacing seals

• Water Quality Impact: Poor water quality with contaminants or inadequate filtration accelerates seal wear. Regularly inspect and maintain water filtration systems 

• Associated Component Inspection: When replacing seals, inspect the ceramic plunger for scratches, scoring, or diameter reduction. A damaged plunger will rapidly destroy new seals 

• Cylinder Bore Inspection: Check the high-pressure cylinder bore for scoring, pitting, or out-of-round conditions. Replace the cylinder if internal damage is detected