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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 Hex Head Sealing Bolts

Metric Hex Head Sealing Bolt - Silicone O-Ring Sealing Screw Diagram

Metric hex head sealing bolts are designed to withstand extreme pressure, and to form a complete seal along the threading of your bolt. Where liquids, gas, and contamination are present, it is crucial to use hex head sealing bolts rather than ordinary nuts bolts to ensure optimal performance from your equipment.

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
SEM04C006HHSEALSSSM46mmHex Head300 Stainless SteelSilicone
SEM04C008HHSEALSSSM48mmHex Head300 Stainless SteelSilicone
SEM04C010HHSEALSSSM410mmHex Head300 Stainless SteelSilicone
SEM04C012HHSEALSSSM412mmHex Head300 Stainless SteelSilicone
SEM04C016HHSEALSSSM416mmHex Head300 Stainless SteelSilicone
SEM04C020HHSEALSSSM420mmHex Head300 Stainless SteelSilicone
SEM04C025HHSEALSSSM425mmHex Head300 Stainless SteelSilicone
SEM05C006HHSEALSSSM56mmHex Head300 Stainless SteelSilicone
SEM05C008HHSEALSSSM58mmHex Head300 Stainless SteelSilicone
SEM05C010HHSEALSSSM510mmHex Head300 Stainless SteelSilicone
SEM05C012HHSEALSSSM512mmHex Head300 Stainless SteelSilicone
SEM05C014HHSEALSSSM514mmHex Head300 Stainless SteelSilicone
SEM05C016HHSEALSSSM516mmHex Head300 Stainless SteelSilicone
SEM05C018HHSEALSSSM518mmHex Head300 Stainless SteelSilicone
SEM05C020HHSEALSSSM520mmHex Head300 Stainless SteelSilicone
SEM05C025HHSEALSSSM525mmHex Head300 Stainless SteelSilicone
SEM06C008HHSEALSSSM68mmHex Head300 Stainless SteelSilicone
SEM06C010HHSEALSSSM610mmHex Head300 Stainless SteelSilicone
SEM06C012HHSEALSSSM612mmHex Head300 Stainless SteelSilicone
SEM06C014HHSEALSSSM614mmHex Head300 Stainless SteelSilicone
SEM06C016HHSEALSSSM616mmHex Head300 Stainless SteelSilicone
SEM06C018HHSEALSSSM618mmHex Head300 Stainless SteelSilicone
SEM06C025HHSEALSSSM625mmHex Head300 Stainless SteelSilicone
SEM08C010HHSEALSSSM810mmHex Head300 Stainless SteelSilicone
SEM08C012HHSEALSSSM812mmHex Head300 Stainless SteelSilicone
SEM08C014HHSEALSSSM814mmHex Head300 Stainless SteelSilicone
SEM08C016HHSEALSSSM816mmHex Head300 Stainless SteelSilicone
SEM08C018HHSEALSSSM818mmHex Head300 Stainless SteelSilicone
SEM08C020HHSEALSSSM820mmHex Head300 Stainless SteelSilicone
SEM08C025HHSEALSSSM825mmHex Head300 Stainless SteelSilicone
SEM10C012HHSEALSSSM1012mmHex Head300 Stainless SteelSilicone
SEM10C016HHSEALSSSM1016mmHex Head300 Stainless SteelSilicone
SEM10C018HHSEALSSSM1018mmHex Head300 Stainless SteelSilicone
SEM10C020HHSEALSSSM1020mmHex Head300 Stainless SteelSilicone
SEM12C016HHSEALSSSM1216mmHex Head300 Stainless SteelSilicone
SEM12C018HHSEALSSSM1218mmHex Head300 Stainless SteelSilicone
SEM12C025HHSEALSSSM1225mmHex Head300 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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