Value Collection ZMSCE70903 Epdm O-ring Dash 903 Pack 90

Product Description

The VALUE COLLECTION ZMSCE70903 is a Dash 903 EPDM O-ring designed for sealing applications in hydraulic, plumbing, and fluid-handling systems. It measures 0.301 inches inner diameter by 0.429 inches outer diameter with a 0.064-inch round cross-section thickness and a Shore hardness of 70. The ethylene propylene diene monomer (EPDM) compound provides strong resistance to hot water, steam, and phosphate ester hydraulic fluids. This O-ring is also noted for excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems. Licensed plumbers, HVAC technicians, and hydraulic system mechanics commonly install this part during routine maintenance or fitting replacement procedures. Each package contains 90 O-rings.

This O-ring is suited for use as an O-ring boss gasket with straight-thread tube fittings. It performs reliably across a wide temperature range, from -65 degrees F to 300 degrees F, making it appropriate for hot water and steam service as well as phosphate ester type hydraulic fluid systems. Its EPDM construction makes it a practical choice in residential and commercial plumbing, hydronic heating, and fluid-power applications where water and steam compatibility are required.

Key Features

• EPDM compound rated for hot water, steam, and phosphate ester hydraulic fluids
• Excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems
• Wide service temperature range: -65 degrees F to 300 degrees F
• Round cross-section, Shore 70 hardness for consistent seal compression
• Suitable for use as an O-ring boss gasket with straight-thread tube fittings
• Packaged in quantities of 90 for shop or service-truck stocking

Compatibility

Designed as an O-ring boss gasket for straight-thread tube fittings. Compatible with hot water, steam, and phosphate ester hydraulic fluid systems.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified hydraulic system mechanic. Shut off and depressurize the fluid system and allow it to cool before removing or replacing any O-ring. Inspect the mating groove and fitting threads for damage or debris before seating the new O-ring. Do not use petroleum-based lubricants with EPDM seals, as they will cause the material to swell and degrade.