Sea-Dog Screw-Out Deck Plate - White - 5"Screw Out Deck Plate White 5" Sea Dog Screw Out Deck Plates are molded to the highest standards using top quality UV stabilizers and antioxidants. When installing, use silicone sealant on hull or deck surface. Keep threads clean with hot, soapy water. Lubricate with Vaseline or Teflon grease. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more