Value Collection ZMSCE70254 Epdm O-ring Dash 254 Pack 10

Product Description

The VALUE COLLECTION ZMSCE70254 is a Dash 254 EPDM O-ring designed for static and dynamic sealing applications where exposure to hot water, steam, and phosphate ester hydraulic fluids is a concern. Measuring 5.5 inches inside diameter, 5.75 inches outside diameter, and 0.125 inches thick with a round cross section, this O-ring carries a 70 Shore A hardness rating. It is sold in a package of 10 units. EPDM compound provides broad chemical resistance and performs across a wide service temperature range, making it a reliable choice for plumbing, HVAC, and industrial fluid-handling systems.

This O-ring is suited for residential and commercial applications involving hot water lines, steam systems, and phosphate ester hydraulic circuits. Phosphate ester compatibility also makes it appropriate for commercial aircraft hydraulic systems that use Skydrol-type fluids. Plumbers, HVAC technicians, and industrial maintenance professionals are the typical installers. The Dash 254 designation follows standard O-ring sizing and simplifies cross-referencing against existing repair specs and OEM callouts.

Key Features

• EPDM compound with excellent resistance to hot water, steam, and phosphate ester fluids including Skydrol hydraulic fluid
• 70 Shore A hardness rating provides firm sealing under compression without excessive deformation
• Round cross section and precise Dash 254 dimensions ensure consistent groove fit
• Rated for service temperatures from -65 degrees F to 300 degrees F
• Sold in a package of 10, minimizing per-unit cost for service stock
• Black color for standard visual identification in field and shop environments

Compatibility

Compatible with hot water, steam, and phosphate ester type hydraulic fluid systems. Also noted for use in commercial aircraft hydraulic systems utilizing Skydrol-type fluids. Designed as a standard Dash 254 O-ring replacement suitable for any groove machined to that designation.

Installation Notes

Shut off fluid supply and depressurize the system completely before removing the old O-ring. Inspect the groove for scoring, corrosion, or debris that could compromise the seal before installing the replacement. Lubricate the O-ring with a compatible fluid or O-ring lubricant to ease installation and reduce the risk of tearing during assembly. Follow applicable plumbing or hydraulic system codes for the jurisdiction and system type being serviced.