Thread Size Thread Size |
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Scale Scale |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Specifications Met Specifications Met |
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Environment Environment |
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Humidity-Indicating Plugs






Monitor humidity in sealed containers without opening them, protecting the inside from contamination. These plugs are often used on plastic bags, storage containers, and electrical housings. Consisting of a mounting nut and two gaskets for a tight seal, these plugs install through a hole in a flexible barrier. Remove one gasket and reverse the nut to install plugs in a rigid container. Watch the indicator disc through the nut’s viewing window—it will change color as humidity rises and falls. Made of anodized aluminum, these plugs resist corrosion and are lightweight. They meet military and SAE standards for humidity indicators.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||||
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Humidity Points | Accuracy | Height | Width | For Hole Diameter | Type | Size | Indicator Use | Specifications Met | Each | |
Anodized Aluminum | ||||||||||
Pie-Style Indicator | ||||||||||
20%, 30%, 40% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | 3/4" | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 000000 |
20%, 30%, 40%, 50% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | 3/4" | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
30%, 40%, 50%, 60% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | 3/4" | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
Spot-Style Indicator | ||||||||||
20%, 30%, 40%, 50% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | 3/4" | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
20%, 30%, 40%, 50% | ±5% | 5/8" | 1 7/8" | 1.45" | UNEF | 1 7/16"-18 | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
40% | ±5% | 5/8" | 1 3/8" | 1.05" | NPSM | 3/4" | Reversible | MIL-I-8835; SAE AS26860 Type 2 | 0000000 | 00000 |
Through-Wall Humidity and Temperature Meters


Mount these meters through the wall of a sealed container or package to monitor relative humidity, temperature, and dew points without exposing the contents to dust and water. Check the readings on an easy-to-read LED display. Made of aluminum, the housing is lightweight and resists corrosion.
For technical drawings and 3-D models, click on a part number.
Relative Humidity | Temperature | Dew Point | ||||||||||||
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Range | Accuracy | Indoor Range | Accuracy | Range | Accuracy | Dp. | Dia. | For Hole Dia. | For Max. Wall Thick. | Batteries Included | Fasteners Included | Environmental Rating | Each | |
5 to 80% | ±3% | -4° to 140° F/-20° to 60° C | ±1° F/±0.5° C | -22° to 68° F/-30° to 20° C | ±3.6° F/±2° C | 1 1/4" | 2 1/2" | 1 27/64" | 11/32" | Yes | Yes | IP67 | 0000000 | 0000000 |