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APEX offers full-service design, engineering and manufacturing to your specifications. Our custom fasteners have enjoyed great success supplying all types and sizes of businesses in most sectors of industry.
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Metric Socket Cap Sealing Screws

Metric Socket Cap Sealing Screw - Silicone O-Ring Sealing Screw Diagram

Metric socket cap seal screws are widely used for their larger head height, resulting in a stronger part, which permits use of a higher torque value. They are engineered with a rubber O-ring under the head of the screw, that once tightened, squeezes outwardly to form a 360° leak-proof seal. This impenetrable, unbreakable seal prevents contaminants, i.e. water, oil, gas, fluids, precipitation, saltwater, dust, moisture and more, from entering and damaging equipment or leaking out and potentially harming our environment.

All parts are made from 18-8 Stainless Steel.

O-Ring Materials Available: Silicone (-SSS), Fluorosilicone (-FSS), Buna (-BSS), and Viton (-VSS).

Apex Part NumberThreadLengthHeadPart MaterialO-Ring
SEM02C004HSEALSSSM24mmSocket Cap300 Stainless SteelSilicone
SEM02C006HSEALSSSM26mmSocket Cap300 Stainless SteelSilicone
SEM02C006HSEALSSSM28mmSocket Cap300 Stainless SteelSilicone
SEM02C010HSEALSSSM210mmSocket Cap300 Stainless SteelSilicone
SEM02C012HSEALSSSM212mmSocket Cap300 Stainless SteelSilicone
SEM02C016HSEALSSSM216mmSocket Cap300 Stainless SteelSilicone
SEM02C020HSEALSSSM220mmSocket Cap300 Stainless SteelSilicone
SEM2.5C004HSEALSSSM2.54mmSocket Cap300 Stainless SteelSilicone
SEM2.5C006HSEALSSSM2.56mmSocket Cap300 Stainless SteelSilicone
SEM2.5C008HSEALSSSM2.58mmSocket Cap300 Stainless SteelSilicone
SEM2.5C010HSEALSSSM2.510mmSocket Cap300 Stainless SteelSilicone
SEM2.5C012HSEALSSSM2.512mmSocket Cap300 Stainless SteelSilicone
SEM2.5C016HSEALSSSM2.516mmSocket Cap300 Stainless SteelSilicone
SEM2.5C020HSEALSSSM2.520mmSocket Cap300 Stainless SteelSilicone
SEM03C004HSEALSSSM34mmSocket Cap300 Stainless SteelSilicone
SEM03C006HSEALSSSM36mmSocket Cap300 Stainless SteelSilicone
SEM03C008HSEALSSSM38mmSocket Cap300 Stainless SteelSilicone
SEM03C010HSEALSSSM310mmSocket Cap300 Stainless SteelSilicone
SEM03C012HSEALSSSM312mmSocket Cap300 Stainless SteelSilicone
SEM03C014HSEALSSSM314mmSocket Cap300 Stainless SteelSilicone
SEM03C016HSEALSSSM316mmSocket Cap300 Stainless SteelSilicone
SEM03C020HSEALSSSM320mmSocket Cap300 Stainless SteelSilicone
SEM03C025HSEALSSSM325mmSocket Cap300 Stainless SteelSilicone
SEM04C006HSEALSSSM46mmSocket Cap300 Stainless SteelSilicone
SEM04C008HSEALSSSM48mmSocket Cap300 Stainless SteelSilicone
SEM04C010HSEALSSSM410mmSocket Cap300 Stainless SteelSilicone
SEM04C012HSEALSSSM412mmSocket Cap300 Stainless SteelSilicone
SEM04C014HSEALSSSM414mmSocket Cap300 Stainless SteelSilicone
SEM04C016HSEALSSSM416mmSocket Cap300 Stainless SteelSilicone
SEM04C018HSEALSSSM418mmSocket Cap300 Stainless SteelSilicone
SEM04C020HSEALSSSM420mmSocket Cap300 Stainless SteelSilicone
SEM04C025HSEALSSSM425mmSocket Cap300 Stainless SteelSilicone
SEM05C010HSEALSSSM510mmSocket Cap300 Stainless SteelSilicone
SEM05C012HSEALSSSM512mmSocket Cap300 Stainless SteelSilicone
SEM05C014HSEALSSSM514mmSocket Cap300 Stainless SteelSilicone
SEM05C016HSEALSSSM516mmSocket Cap300 Stainless SteelSilicone
SEM05C018HSEALSSSM518mmSocket Cap300 Stainless SteelSilicone
SEM05C020HSEALSSSM520mmSocket Cap300 Stainless SteelSilicone
SEM05C025HSEALSSSM525mmSocket Cap300 Stainless SteelSilicone
SEM06C010HSEALSSSM610mmSocket Cap300 Stainless SteelSilicone
SEM06C012HSEALSSSM612mmSocket Cap300 Stainless SteelSilicone
SEM06C014HSEALSSSM614mmSocket Cap300 Stainless SteelSilicone
SEM06C016HSEALSSSM616mmSocket Cap300 Stainless SteelSilicone
SEM06C018HSEALSSSM618mmSocket Cap300 Stainless SteelSilicone
SEM06C020HSEALSSSM620mmSocket Cap300 Stainless SteelSilicone
SEM06C025HSEALSSSM625mmSocket Cap300 Stainless SteelSilicone
SEM08C010HSEALSSSM810mmSocket Cap300 Stainless SteelSilicone
SEM08C012HSEALSSSM812mmSocket Cap300 Stainless SteelSilicone
SEM08C016HSEALSSSM816mmSocket Cap300 Stainless SteelSilicone
SEM08C020HSEALSSSM820mmSocket Cap300 Stainless SteelSilicone
SEM08C025HSEALSSSM825mmSocket Cap300 Stainless SteelSilicone


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APEX FASTENERS, Inc - 15858 Business Center Drive - Irwindale, CA 91706 USA
APEX Fasteners supplies standard and custom screws, nut retainers, shoulder screws, plastites and taptites, all types of rivets, spring steel fasteners and special stampings, sems screws in standard, fractional or metric to electronics, aviation and other OEM industries worldwide. ApexFasteners.com custom manufactures screw machine components for electronic enclosure hardware as well as cold forming and cold headed specials for assembly and production requirements.
Tel: (626) 962-2219 - info@apexfasteners.com
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