movement of a slot fig1 is an exploded view of a fastener clip assembly in accordance with some embodiments in some embodiments the fastener clip assembly comprises cap grommet 1100 and pin pin retainer 1200 pin 1200 is configured to engage and secure itself into an opening at the bottom of cap 1100 in some embodiments the two piece assembly may be configured to retain various trim panels such as panel 1400 to a car chassis such as chassis 1500 cap 1100 may be configured to attach to a slot in chassis 1500 and pin 1200 is configured to attach to panel 1400 in some embodiments chassis 1500 may be attached to panel 1400 based at least upon pin 1200 being configured to attach to cap 1100 in some embodiments seal component 1300 is configured to attach over pin 1200 and to form a seal against chassis surface 1500 when the pin is attached to the cap in some embodiments forming a seal against chassis surface 1500 prevents water dirt and other debris from entering through the chassis slot in some embodiments cap 1100 may also include a funnel facing toward pin 1200 configured to guide the pin into the cap for example in situations where the pin may approach the cap off center off the center.