Gasket

Start with the media, temperature and pressure. Then select a suitable material, size, and shape for the flange. Matching dimensions alone do not make different gasket materials interchangeable.

NR is an initial option for water and general service without petroleum oil. NBR is known for oil resistance, while EPDM is suited to water and weather exposure but is generally unsuitable for petroleum oils. Each material is available in different compounds, so check the actual grade and service conditions.

Colour and general performance descriptions do not identify the grade or operating limits. Gaskets of the same colour may use different compounds or grades. Check the brand, grade reference and supporting documentation, especially when replacing an existing gasket.

No. Pipe size is a nominal designation, not the gasket’s measured ID or OD. Check it together with the flange standard, pressure class and actual part dimensions.

No. Choose thickness according to the equipment requirements, gasket material and joint condition. Do not increase thickness to address leakage without checking its cause.