Tips

Storage

Sometimes, gaskets are stored at end-user customers for extended periods.

By observing certain rules, the efficiency of the gaskets can be maintained: they should be stored in a way that prevents damage from external factors.

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Resolution of the main problems

Diesel Effect

Seals for pistons with guide rings made of acetal resin used in earthmoving machinery, in the presence of water hammer or when the machine operates under very heavy conditions, sometimes experience the melting of the plastic part with the deposition of carbon particles on the guide surface. Seals without guides, on the other hand, show traces of exposure to very high temperatures with burns and carbonization in the sealing area in direct contact with the fluid. Research conducted in collaboration with cylinder manufacturers and major hydraulic component producers has helped explain the phenomenon. Oil in a hydraulic system contains air. This air can be released due to vibrations and form pockets that naturally also contain oil vapors. If this air-oil mixture reaches a ratio of 7.5 to 1 by weight and a temperature of 200-250 °C (which can be reached with a pressure of 100 bar), it can spontaneously ignite, as in a Diesel cycle engine.
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