Suzhou Anzhikou Hardware Technology Co., LTD. had introduced two kinds of waterproof screws: sealing ring waterproof screws and sealant waterproof screws. Both can be used in outdoor equipment, lamps, instruments and meters. Although both are waterproof screws, what are the similarities and differences between them? Here, Simple takes a closer look: 
1. Waterproof grade 
Although one is a sealing O ring and one is a sealant, the waterproof grade of both can reach IP67 and IP68; 
2. Waterproof principle 
Are through extrusion to achieve the effect of waterproof, but one is extrusion sealing ring, one is extrusion sealant; 
3. Raw materials and production process 
The production process is cold heading, raw materials are mainly stainless steel, can be passivated to increase the rust resistance of stainless steel; 
4. Size
The sealing O ring is only applicable to waterproof screws above M1.6, but the sealant can be applied to any size; 
Suzhou Anzhikou Hardware Technology CO., LTD is a manufacturer with many years of screw customized production experience, the current two waterproof ways (sealing ring + sealant) screw we could do it, can also according to customer demand for customized, if no drawing, our engineer can also according to your request to design drawings, to provide you with suitable fastener solutions.