O-ring - 28mm; EPDM (black) IVAR.IVO.EPDM

Product detailed description

EPDM O-rings are essential components in press-fit pipe systems where reliable sealing is required under varying thermal and mechanical loads. They are commonly used in central heating systems, cold water and cooling circuits, fire suppression systems, climate control installations, and solar applications. These systems often require frequent disassembly for inspection or maintenance, making high-quality seals critical for leak-free operation.

In commercial and industrial buildings, these O-rings are integrated into press-fit fittings to connect steel pipes. Their design ensures a tight seal without the need for threading or welding, reducing installation time and complexity. The operating environment can include both closed-loop systems under pressure and open-air installations exposed to ambient temperature fluctuations.

Technical parameters

Operating temperature	-20 °C
Nominal pressure	PN 16
Code	I000723
Brand	IVAR

Installation and connection

Before installation, ensure the press-fit fitting is clean and free from debris that could compromise the seal. Confirm that the O-ring fits correctly into the groove of the fitting. The 28mm internal diameter is suitable for standard press-fit connections. During installation, avoid over-stretching the O-ring, which could lead to premature failure. Check that the mating surfaces are parallel and evenly seated after pressing. Common errors include using incorrect tools during pressing operations or reusing old O-rings after disassembly.

Compatibility and accessories

This O-ring is compatible with IVAR press-fit fittings designed for PN16 systems. Ensure that all components, including the fitting body and any locking mechanisms, are from the same system for optimal performance. Additional components such as press-fit couplings, reducers or expansion joints should be sourced from the same range to maintain system integrity and sealing effectiveness.

Technical background for designers

EPDM rubber is selected for its resistance to temperature extremes and its ability to maintain elasticity over time. This makes it particularly suitable for environments where the system is exposed to both heating and cooling cycles. The press-fit system relies on the O-ring's ability to compress evenly between the pipe and fitting, ensuring a fluid-tight connection. The nominal pressure rating of PN16 indicates that the system is designed for continuous operation under 16 bar of pressure, provided all components are correctly selected and installed.

Service and operation

During regular maintenance checks, inspect the O-ring for signs of wear, deformation or chemical degradation. Replace the O-ring if it shows any damage or if the system has been disassembled. There are no defined service intervals beyond visual inspections, as the lifespan depends on operational conditions and frequency of use.

Frequently asked questions

Can the O-ring be used in fire suppression systems?
Yes, the O-ring is suitable for use in fire suppression systems, including those with permanent irrigation, due to its resistance to water and thermal stress.

Is the O-ring compatible with inert gas systems?
Yes, it can be used with inert gases and other non-corrosive media within the specified pressure and temperature limits.

Does the O-ring support installation in closed-loop heating systems?
Yes, it is specifically designed for installation in central heating systems that operate under pressure.

What materials are used for the fitting body?
The fitting body is made from carbon steel with a zinc coating, while the sealing element is composed of EPDM rubber.