Silicone O-Ring 1/2" NPT


Silicone O-Ring

1/2" NPT

Sealcon # OR-18-SI
Color Red
Hummel # 1.321.1200.79
Hummel O-Ring-VMQ
Material Silicone

Inner Diameter (D)
.75" (19 mm)
Height (E)
.07" (1.8 mm)


If NEMA 4x or 6 (European IP 68 - submersible) is required, O-Rings or Seal Rings (ordered separately) should be used when mounting Strain Relief Fittings to a control panel, secured with a locking nut. The Straight Strain Relief fittings feature a molded O-Ring groove. For these fittings, the Buna-N O-Ring is the best solution. The Snap Elbows and some of the Conduit Fittings do not have a recess for an O-Ring. In that case, the Polyethylene Seal Ring would be the best choice, unless the hole can be beveled to accommodate an O-Ring.

Technical Data

Operating Temperature

-60°C to 250°C (-76°F to 482°F)


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