DSTU-compliant paronite gaskets for flanges and industrial equipment: classification; selection of material, thickness, and dimensions; temperature and pressure ratings.

Paronite gaskets are used to seal flanges, pumps, valves, heat exchangers, casing joints, and pipelines. They operate under compression, temperature, and pressure, so they must match not only the required dimensions but also the operating conditions of the working medium. DSTU paronite gaskets are required where consistent geometry, material quality, and controlled parameters are especially important.

Classification by application and working medium

Paronite gaskets differ in shape, thickness, material grade, and application. Different grades of paronite are used for water, steam, gas, oils, fuel, and industrial fluids. Choosing the wrong material can lead to leakage, loss of clamping force, or gasket failure after heating.

Paronite flange gaskets (interflange gaskets) must precisely match the installation dimensions: inner and outer diameter, bolt holes, and center-to-center distances. Paronite interflange gaskets are particularly sensitive to misalignment, as uneven tightening creates local overload zones.

Production features and quality control

Production begins with selecting paronite sheet of the required thickness. The gasket is then cut or punched according to a drawing, template, or sample. A high-quality gasket must have clean edges without tears, accurately positioned holes, no cracks, and consistent thickness across the entire surface.

Before placing an order, the following parameters should be agreed:

• temperature and pressure;
• paronite grade;
• thickness;
• flange dimensions;
• number of holes;
• working medium;
• temperature and pressure;
• DSTU or drawing requirements.

Ukrguma manufactures and supplies sealing solutions for industrial customers, where price should be evaluated together with service life. A cheap gasket with inaccurate dimensions can quickly result in additional costs for dismantling, equipment downtime, and repeat purchasing.

How to choose and buy the right gasket for a specific assembly

To purchase DSTU paronite gaskets, it is necessary to provide the technical parameters of the assembly rather than only the product name. For proper selection, it is important to know the type of flange connection, the outer and inner diameter of the gasket, material thickness, and the number and position of mounting holes. If the gasket is installed on a critical flange connection, it should not be selected based on an approximate diameter or solely on visual similarity to the old part. Accurate dimensions, the working medium, temperature, pressure, and installation conditions are required. It is also important to consider the condition of the flange surfaces and the uniformity of fastener tightening, since even a correctly selected material cannot compensate for serious installation errors.

Particular attention should be paid to the compatibility of paronite with the working medium. The same gasket thickness or shape does not mean that it is equally suitable for water, steam, oils, fuel, or other process media. For assemblies operating at elevated temperatures or pressures, the permissible operating parameters of the specific material grade must be taken into account. This is especially important for industrial equipment, pipelines, heat exchangers, pumping systems, and other types of valves and fittings, where loss of tightness can cause downtime or leakage of the working medium.

Proper classification makes it possible to select a gasket that will not be squeezed out under load, lose sealing performance due to temperature cycles, or fail after the first start-up. Not only the material but also the correct geometry, thickness, and suitability for the operating conditions of a specific assembly are important. For maintenance and production operations, this is the basis for reliable flange connections, a lower risk of repeated dismantling, and fewer unplanned repairs. That is why all assembly parameters should be checked and compared with the material characteristics before ordering a paronite gasket.