Value Collection ZMSCE70261 Epdm O-ring Dash 261 8 Pack

Product Description

The VALUE COLLECTION ZMSCE70261 is a Dash 261 EPDM O-ring designed for static and dynamic sealing applications in systems handling hot water, steam, and phosphate ester hydraulic fluids. Manufactured from Ethylene Propylene Diene Monomer (EPDM) with a Shore A hardness of 70, this O-ring delivers reliable sealing performance across a working temperature range of -65 degrees F to 300 degrees F. The round cross section measures 6.75 inches inside diameter, 7.00 inches outside diameter, and 0.125 inches thick. Each order includes 8 O-rings. HVAC technicians, plumbers, and hydraulic system mechanics install this part in applications where resistance to heat and water-based or phosphate ester fluids is required.

This O-ring is suited for residential and commercial installations involving hot water systems, steam lines, and phosphate ester type hydraulic fluid circuits. It is also noted for excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems, making it applicable in aerospace maintenance environments as well. Typical install scenarios include pump housings, pipe flanges, valve bodies, and equipment covers where a large-diameter face seal or gland seal is needed. Trade professionals select this part when system fluid compatibility with EPDM is confirmed.

Key Features

• EPDM material with Shore A hardness rating of 70 for firm, reliable sealing under compression
• Wide service temperature range: -65 degrees F to 300 degrees F
• Compatible with hot water, steam, and phosphate ester hydraulic fluids
• Excellent resistance to Skydrol fluids used in commercial aircraft hydraulic systems
• Round cross section profile for standard O-ring groove fitment
• Sold in a pack of 8 to support service stock and repeat maintenance tasks

Compatibility

Compatible with systems and fluids including hot water, steam, and phosphate ester type hydraulic fluids. Also recommended for applications involving Skydrol hydraulic fluids used in commercial aircraft systems. Verify groove dimensions and fluid compatibility before installation.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system mechanics depending on the application. Depressurize and drain the system completely before removing the existing O-ring or installing a new one. Lubricate the O-ring with a compatible lubricant before seating it in the groove to prevent nicking or rolling during assembly. Confirm groove dimensions match the Dash 261 standard before installation to ensure proper compression and sealing.