Rotary switches are unique in that they operate with a twisting motion as opposed to a push or press motion.

The central shaft of a rotary device must be free to rotate, which can make sealing a rotary device more complicated to accomplish. Since a full-coverage boot does not work for a rotary device, APM Hexseal developed a specialized open boot, molded from silicone to a threaded mounting nut, that, once correctly mounted, seals around the rotating shaft as well as to the mounting panel. These boots are specifically designed to withstand the friction created by the shaft rotation without restricting the actuation motion.

Rotary Boots
Rotary Boots
Material Specifications

For APM Hexseal® Standard Threaded Rotary Boots

Mounting Nut:
Brass, Nickel Plated
Elastomer:
Silicone conforms to A-A-59588, Class 3A, GR50 †, Gray ‡
Temperature Range:
-103° F to +400° F ( -75° C to +204° C)
Resistant to:
Splash, salt spray, sunlight, ozone, weather, fungus, dust, and most acids and lubricating oils.
Shelf Life:
Excess of 25 years.
APM Hexseal
Part #
Military
Part #
Thread SizeShaft Size (A)Height (B)Hex Size (C)System of
Measurement
N9030x1/4M5423/09-023/8-32 UNEF-2B0.250"6.35mm0.219"5.56mm0.500"12.70mmImperial
N9040x1/8M5423/09-031/4-32 UNEF-2B0.125"3.18mm0.219"5.56mm0.375"9.53mmImperial
N9042x1/8-1/4-28 UNF-2B0.125"3.18mm0.219"5.56mm0.375"9.53mmImperial
N9060x1/4M5423/09-0415/32-32 UNS-2B0.250"6.35mm0.219"5.56mm0.625"15.88mmImperial
1332/39-M7x.75 6H0.196"5.00mm0.200"5.50mm0.500"12.70mmMetric
1332/45-M10x1 6H0.236"6.00mm0.236"5.90mm0.500"12.70mmMetric
1332/46-M10x.75 6H0.236"6.00mm0.236"5.90mm0.500"12.70mmMetric
C1332/41-M9x.75 6H0.250"6.35mm0.219"5.56mm0.500"12.70mmMetric
Rotary Boots
Rotary Boots
Material Specifications

For APM Hexseal® Standard Threaded Rotary Boots

Mounting Nut:
Brass, Nickel Plated
Elastomer:
Silicone conforms to A-A-59588, Class 3A, GR50 †, Gray ‡
Temperature Range:
-103° F to +400° F ( -75° C to +204° C)
Resistant to:
Splash, salt spray, sunlight, ozone, weather, fungus, dust, and most acids and lubricating oils.
Shelf Life:
Excess of 25 years.
APM Hexseal
Part #
Military
Part #
Thread SizeShaft Size (A)Height (B)Hex Size (C)System of
Measurement
N9030x1/4M5423/09-023/8-32 UNEF-2B0.250"6.35mm0.219"5.56mm0.500"12.70mmImperial
N9040x1/8M5423/09-031/4-32 UNEF-2B0.125"3.18mm0.219"5.56mm0.375"9.53mmImperial
N9042x1/8-1/4-28 UNF-2B0.125"3.18mm0.219"5.56mm0.375"9.53mmImperial
N9060x1/4M5423/09-0415/32-32 UNS-2B0.250"6.35mm0.219"5.56mm0.625"15.88mmImperial
1332/39-M7x.75 6H0.196"5.00mm0.200"5.50mm0.500"12.70mmMetric
1332/45-M10x1 6H0.236"6.00mm0.236"5.90mm0.500"12.70mmMetric
1332/46-M10x.75 6H0.236"6.00mm0.236"5.90mm0.500"12.70mmMetric
C1332/41-M9x.75 6H0.250"6.35mm0.219"5.56mm0.500"12.70mmMetric