A device for connection to a medical connector, the device includes an outer cap, an inner cap and a peelable seal. The outer cap configured to define a chamber to contain an absorbent material and disinfectant or antimicrobial agent. The outer cap including one or more threads adapted to engage with a female luer connector. The inner cap including one or more thread-tabs adapted to engage a male luer connector. The peelable seal prevents the disinfectant or the antimicrobial agent from exiting the chamber.