Product Name: Dynamic Seal (Part No. 302951)

Description:
This component is a high-pressure dynamic seal, specifically designed for the intensifier pump of waterjet cutting systems . It is a gray elastomeric sealing ring with precise dimensions of approximately 0.57 inches outer diameter (OD) and 0.311 inches inner diameter (ID) . The seal is manufactured to OEM specifications and serves as a critical consumable component that provides a leak-tight seal between reciprocating surfaces within the high-pressure pump assembly.

This dynamic seal is used in OMAX EnduroMAX and OMAX Maxiem direct drive waterjet pumps . It is also included as a component in several maintenance kit assemblies, including P/N 302950 (Dynamic Seal Assembly), P/N 303019, and P/N 302700 (Minor Maintenance Kit) .

Applications:

• Provides dynamic sealing between reciprocating components in waterjet intensifier pumps

• Used in OMAX EnduroMAX and Maxiem direct drive waterjet systems 

• Suitable for ultra-high pressure waterjet systems operating at 60,000 PSI and above

• Installed as a replacement part during pump maintenance and overhaul procedures

• Compatible with AccuStream and Hypertherm waterjet equipment 

Features:

• Precision Dimensions: 0.57" OD × 0.311" ID for proper fit in designated seal grooves 

• OEM Specification: Manufactured to meet or exceed original equipment standards 

• Critical Consumable Component: Designed for periodic replacement during scheduled pump maintenance

• High-Pressure Compatibility: Engineered for ultra-high pressure waterjet operating environments

• Kit Integration: Available as standalone seal or as part of larger maintenance kits (302950, 302700, 303019) 

• Direct Replacement: Interchangeable with OMAX #302951 and WO040039 

Maintenance:

Failure Diagnosis:

• External Water Leakage: Visible water weeping from the pump area indicates dynamic seal wear or failure

• Pressure Drop: Inability to maintain rated cutting pressure suggests seal degradation

• Increased Pump Cycling Frequency: More frequent intensifier cycling may indicate internal bypass past worn seals

• Water Contamination in Hydraulic Oil: Milky or discolored hydraulic oil indicates seal failure allowing water intrusion

Replacement Guidelines:

• Replace as a Set: When replacing the dynamic seal, it is recommended to replace associated O-rings simultaneously. The Dynamic Seal Assembly kit (302950) includes this seal (302951) together with O-rings 201707 and 200377 

• Preventive Replacement: Dynamic seals are consumable components that should be replaced according to the manufacturer's scheduled maintenance intervals

• Clean Installation: Thoroughly clean the seal groove and mating surfaces before installing a new seal

• Lubrication: Apply manufacturer-recommended high-pressure grease to the seal during installation to prevent dry start-up

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

Cross-Reference Information:

• OMAX #302951 

• WSI #MX302951 

• WO040039 

• Also known as "Seal, Dynamic, Gray" 

• Component of kits: 302950, 303019, 302700