MS18013-3 Humidity Indicator Plug
SKU: MS18013-3

MS18013-3 Humidity Indicator Plug


Meets MS18013-3

This is a zinc-plated brass Humidity Indicator Plug with a glass window. Furnished with gasket, gasket retainer and nut. It installs into a container through a 0.515 in. (13.1 mm) diameter hole. Furnished with a 20-30-40% pie sector humidity disc. Humidity disc is not field replaceable. NSN # 6685-00-464-4660.

Weight: 0.08 lbs. (36 grams)

Recommended Installation Torque: 25 - 35 in. - lbs. (3.0 - 4.0 N·m)

Maximum wall thickness: 0.15 in. (4 mm)

Additional Information

Mounting Hole Diameter

0.515 in (13.1 mm)

Body Finish

Zinc-Plated, Clear

External Gasket Material


Window Diameter

0.995 in (25.3 mm)

Complies With


Body Material



0.08 lbs (36 grams)

Internal O-Ring Material


IP/NEMA Rating

This is appropriate for use on NEMA 1, 2, 3, 3R, 3S, 4, 5, 6, 12, 12K and 13 enclosures, as well as I66/IP67 enclosures. This item may also be appropriate for use on other NEMA or IP enclosures, depending upon the application.

Maximum Wall Thickness

0.15 in (4 mm)

Tech Sheets