Value Collection ZMSCS70225 Silicone O-ring Dash 225 10pk

Product Description

The VALUE COLLECTION ZMSCS70225 is a round cross-section silicone O-ring sized to Dash 225 standards, with a 1.875-inch inside diameter, 2.125-inch outside diameter, and 0.125-inch thickness. Rated at 70 Shore A hardness, this O-ring is suited for sealing applications that demand a wide operating temperature range, from -80 degrees F to 450 degrees F. Its silicone compound delivers reliable dry heat resistance along with good weather and ozone resistance. Licensed plumbers, HVAC technicians, and maintenance mechanics install this style of O-ring in fluid and gas sealing applications across residential and light commercial equipment. Sold in a pack of 10.

This O-ring is used in applications where the sealing environment involves temperature extremes, outdoor exposure, or ozone-rich conditions. It is compatible with oils, certain chemicals, and solvents, though oil resistance is limited and should be evaluated against the specific service fluid before installation. Typical applications include pump housings, valve bodies, manifold connections, and HVAC refrigerant or fluid system fittings where a standard Dash 225 round-section seal is required. Silicone compound is not recommended for dynamic sealing under high mechanical stress.

Key Features

• Dash 225 standard sizing: 1.875 inches ID, 2.125 inches OD, 0.125 inches thick
• Silicone compound rated for -80 degrees F to 450 degrees F operating range
• 70 Shore A hardness rating for firm, consistent compression sealing
• Round cross-section profile for reliable seat engagement in standard O-ring grooves
• Good weather and ozone resistance for outdoor or exposed service environments
• Sold in a quantity of 10 per package, minimum order of 1 package

Compatibility

Designed as an OEM-style replacement or service seal for any application requiring a standard Dash 225 round-section O-ring in silicone material, including pump, valve, and fitting assemblies compatible with oils, chemicals, and solvents within the rated temperature range.

Installation Notes

Power down or depressurize the system completely before removing any existing seal or fitting. Inspect the O-ring groove for nicks, corrosion, or debris before seating the new ring. Apply a compatible lubricant approved for silicone elastomers to ease installation and prevent twisting or rolling of the cross-section. Verify that the service fluid and operating conditions fall within the stated temperature and chemical compatibility limits before returning the system to service.