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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.
Contact Apex Fasteners with your hardware requirements

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Hex Head Sealing Bolts

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

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 NumberThreadLengthMax Head WidthHeadPart MaterialO-Ring
SE04C0025HHSEALSSS4-401/4"3/16"Hex Head300 Stainless SteelSilicone
SE04C0031HHSEALSSS4-405/16"3/16"Hex Head300 Stainless SteelSilicone
SE04C0037HHSEALSSS4-403/8"3/16"Hex Head300 Stainless SteelSilicone
SE04C0050HHSEALSSS4-401/2"3/16"Hex Head300 Stainless SteelSilicone
SE04C0062HHSEALSSS4-405/8"3/16"Hex Head300 Stainless SteelSilicone
SE04C0075HHSEALSSS4-403/4"3/16"Hex Head300 Stainless SteelSilicone
SE04C0087HHSEALSSS4-407/8"3/16"Hex Head300 Stainless SteelSilicone
SE04C0100HHSEALSSS4-401"3/16"Hex Head300 Stainless SteelSilicone
SE06C0025HHSEALSSS6-321/4"1/4"Hex Head300 Stainless SteelSilicone
SE06C0031HHSEALSSS6-325/16"1/4"Hex Head300 Stainless SteelSilicone
SE06C0037HHSEALSSS6-323/8"1/4"Hex Head300 Stainless SteelSilicone
SE06C0050HHSEALSSS6-321/2"1/4"Hex Head300 Stainless SteelSilicone
SE06C0062HHSEALSSS6-325/8"1/4"Hex Head300 Stainless SteelSilicone
SE06C0075HHSEALSSS6-323/4"1/4"Hex Head300 Stainless SteelSilicone
SE06C0087HHSEALSSS6-327/8"1/4"Hex Head300 Stainless SteelSilicone
SE06C0100HHSEALSSS6-321"1/4"Hex Head300 Stainless SteelSilicone
SE08C0025HHSEALSSS8-321/4"1/4"Hex Head300 Stainless SteelSilicone
SE08C0031HHSEALSSS8-325/16"1/4"Hex Head300 Stainless SteelSilicone
SE08C0037HHSEALSSS8-323/8"1/4"Hex Head300 Stainless SteelSilicone
SE08C0050HHSEALSSS8-321/2"1/4"Hex Head300 Stainless SteelSilicone
SE08C0062HHSEALSSS8-325/8"1/4"Hex Head300 Stainless SteelSilicone
SE08C0075HHSEALSSS8-323/4"1/4"Hex Head300 Stainless SteelSilicone
SE08C0087HHSEALSSS8-327/8"1/4"Hex Head300 Stainless SteelSilicone
SE08C0100HHSEALSSS8-321"1/4"Hex Head300 Stainless SteelSilicone
SE10F0025HHSEALSSS10-321/4"5/16"Hex Head300 Stainless SteelSilicone
SE10F0031HHSEALSSS10-325/16"5/16"Hex Head300 Stainless SteelSilicone
SE10F0037HHSEALSSS10-323/8"5/16"Hex Head300 Stainless SteelSilicone
SE10F0050HHSEALSSS10-321/2"5/16"Hex Head300 Stainless SteelSilicone
SE10F0062HHSEALSSS10-325/8"5/16"Hex Head300 Stainless SteelSilicone
SE10F0075HHSEALSSS10-323/4"5/16"Hex Head300 Stainless SteelSilicone
SE10F0087HHSEALSSS10-327/8"5/16"Hex Head300 Stainless SteelSilicone
SE10F0100HHSEALSSS10-321"5/16"Hex Head300 Stainless SteelSilicone
SE10C0031HHSEALSSS10-245/16"5/16"Hex Head300 Stainless SteelSilicone
SE10C0037HHSEALSSS10-243/8"5/16"Hex Head300 Stainless SteelSilicone
SE10C0050HHSEALSSS10-241/2"5/16"Hex Head300 Stainless SteelSilicone
SE10C0062HHSEALSSS10-245/8"5/16"Hex Head300 Stainless SteelSilicone
SE10C0075HHSEALSSS10-243/4"5/16"Hex Head300 Stainless SteelSilicone
SE10C0087HHSEALSSS10-247/8"5/16"Hex Head300 Stainless SteelSilicone
SE10C0100HHSEALSSS10-241"5/16"Hex Head300 Stainless SteelSilicone
SE25C0025HHSEALSSS1/4"1/4"7/16"Hex Head300 Stainless SteelSilicone
SE25C0037HHSEALSSS1/4"3/8"7/16"Hex Head300 Stainless SteelSilicone
SE25C0050HHSEALSSS1/4"1/2"7/16"Hex Head300 Stainless SteelSilicone
SE25C0075HHSEALSSS1/4"3/4"7/16"Hex Head300 Stainless SteelSilicone
SE25C0100HHSEALSSS1/4"1"7/16"Hex Head300 Stainless SteelSilicone
SE31C0050HHSEALSSS5/16-181/2"1/2"Hex Head300 Stainless SteelSilicone
SE31C0062HHSEALSSS5/16-185/8"1/2"Hex Head300 Stainless SteelSilicone
SE31C0075HHSEALSSS5/16-183/4"1/2"Hex Head300 Stainless SteelSilicone
SE31C0100HHSEALSSS5/16-1811/2"Hex Head300 Stainless SteelSilicone
SE37C0050HHSEALSSS3/8-161/2"9/16"Hex Head300 Stainless SteelSilicone
SE37C0062HHSEALSSS3/8-165/8"9/16"Hex Head300 Stainless SteelSilicone
SE37C0075HHSEALSSS3/8-163/4"9/16"Hex Head300 Stainless SteelSilicone
SE37C0100HHSEALSSS3/8-161"9/16"Hex Head300 Stainless SteelSilicone
SE50C0050HHSEALSSS1/2-131/2"3/4"Hex Head300 Stainless SteelSilicone
SE50C0075HHSEALSSS1/2-133/4"3/4"Hex Head300 Stainless SteelSilicone
SE50C0100HHSEALSSS1/2-131"3/4"Hex 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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