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PRIMO clamp sealings have their justification for optimizing doors and windows produced earlier than 1990, where the use of this type of sealing was standard. The gasket provides sealing between the sash and frame and strengthens the isolation abilities of your windows and doors.

If the gasket in your existing windows or doors cannot be replaced, a universal sealing gasket will be a useful solution, as it assists where other solutions are insufficient.
See more about universal gasket here.