Sealed Screws Captive Lock And Seal Bolts Custom Made

Sealed screws are the screws with the special coating which named nyseal. Under the head sealant (resistant to automotive fluids)
Nyseal is a great gasket alternative, creating a gasket-type seal, preventing leakage of fluids and gasses under pressure. The coating is permanently fused on the bearing surface of the fastener. As the screw is seated to its final position against the mating part, the Nyseal element compresses slightly and fills the void between the bearing surface of the head and the countersink/counterbore. Ever Hardware provides custom-made fasteners and customizable packaging.
Eliminates time-consuming, in-house applications of O-rings, gasket seals, and sealant compounds
Permanently bonded to the bearing surface
Eliminates the leak path
Prevents galvanic corrosion between dissimilar materials
Reusable
Highly durable
Will not shrink or dry out from age
Screw strength is unaffected
Assembly ready

Nickel plating prevents the sealed screws from rusting. Nickel electroplating is a technique of electroplating a thin layer of nickel onto a metal object. The nickel layer can be decorative, provide corrosion resistance, wear resistance, or used to build up worn or undersized parts for salvage purposes.
Nickel electroplating is a process of depositing nickel on a metal part. Parts to be plated must be clean and free of dirt, corrosion, and defects before plating can begin. To clean and protect the part during the plating process a combination of heat treating, cleaning, masking, pickling, and etching may be used. Once the piece has been prepared it is immersed into an electrolyte solution and is used as the cathode. The nickel anode is dissolved into the electrolyte in the form of nickel ions. The ions travel through the solution and deposit on the cathode.