The u-ring SNI 43 is a single-acting PTFE seal in the form of an inner sealing u-ring. The steel V-spring activates the sealing lip permanently so that even in a non-pressurized state, good sealing performance is guaranteed.
Due to the asymmetrical sealing lips, the sealing force is optimised and the friction behaviour improved. As a result, the service life is substantially lengthened. The standard for this seal is provided in the adjoining material combination. For non-standard applications, further PTFE compounds and V springs made of Elgiloy® are available.