JM Test System’s is fully accredited for testing high voltage rubber protective goods including gloves, blankets, line hoses, and rubber sleeves. Our rubber testing lab provides electrical glove testing services to ASTM D120 & ASTM F496 standards. Rubber sleeves are tested to ASTM D1051 & ASTM F496 standards.


Glove Education

Learn more about ASTM standards, labeling, voltages, and correct glove sizing.



Have a question you don’t see answered here? Feel free to give us a call at 800-353-3411, ext 4052 or use the contact form below.

Large Inventory

JM Test Systems has a large inventory of gloves covering Class 00 (500 volts) to Class 4 (36,000 volts). We offer gloves from the industry leaders including Salisbury, Chance, PIP, and OEL.

Inventory Within Reach

JM Test has inventory at multiple locations. This allows us to fill your order quickly and save you transit time and cost.

Testing for Safety

All electrical gloves purchased from JM Test Systems are tested to ASTM D120 and ASTM F496 Standards. These are the same standards that we test gloves at that have been in service. Many suppliers do not perform this testing on new gloves prior to the shipment of the order. Our priority is keeping you safe. We can also stamp your gloves with a unique ID number to help with tracking and we auto-enroll you in our retest program that is designed to help you manage your glove rotations and keep you compliant. All gloves come complete with current date stamps.

Accessories On Hand

JM test keeps inventory on leather protectors, glove bags, and glove dust to go with your electrical gloves. All of these items are available in our custom glove kits.



We’re the experts when it comes to testing. Contact us today at 800-353-3411, ext 4052 or use the contact form below.


JM Test Systems is fully accredited for testing high voltage rubber protective goods. Our rubber testing lab provides electrical glove testing services to ASTM D120 & ASTM F496 standards. Rubber sleeves are tested to ASTM D1051 & ASTM F496 standards. All gloves tested by JM Test Systems include a detailed testing report.

PPE Rotation Management Program

– JM Test Systems is concerned about you and your employee’s safety. Our PPE Rotation Management Program helps to keep you in compliance with all OSHA safety standards. Every 6 months, retesting is required. We have many different options to meet your company’s needs and we send out retest notifications prior to your items being due. Testing must be done every 6 months.

Staff Experience

Our dedicated staff, with over 20 years of experience, is here to help our customers understand the importance of what we do, how to use their equipment properly, and help to educate on the best care and maintenance practices.


Our process of handling customer’s equipment follows the best suggested process, set forth by the ASTM, the governing body over testing materials. All tested gloves, including new equipment, is stamped and sent out with current dates. Customer specific stamping is also available, including employee ID #’s, names, rotation number, and so much more.

Auto Replacement Program

This program is available to automatically replace any gloves in your inventory that fail, cutting down on hold ups for turn- around and ultimately saving you money.


Our process of handling customers equipment follows the best suggested process, set forth by ASTM, the governing body over testing materials. Our process is as follows:



Gloves start in our receiving department and are entered into our system by pairs to accurately detail the quantity and characteristics of each glove. They are brought into the washroom to start the cleaning process.



Gloves are washed in our commercial washers with detergents that disinfect and remove contaminants. These detergents are specifically designed for the use on rubber insulative equipment. The gloves are then dried for testing
to prevent flashover.



JM is capable of testing all gloves as classified by ASTM. All testing is performed using AC current in accordance with ASTM testing standards, which are nationally recognized by OSHA to be the industry standard.

Our technicians prep the dielectric gloves testing machine to ensure all settings meet these standards. The machines grounding rods act as a ground reference if the electricity punctures through the glove. Gloves are hung individually from the rack of the tester by pins. As testing begins, the gloves are filled with water and the tester closes to safeguard our employees from electric shock potential. The water in the tank is energized to the appropriate test voltage. Voltage is applied for at least one minute for retest gloves and three minutes for new gloves. Electrical current levels are monitored during this time to ensure current leakage is not in excess. The gloves are then dried a second time.



Gloves that have passed dielectric testing are then moved to our inflation area where visual inspection is performed. Compressed air is used and regulated to ensure that gloves are inflated to ASTM specifications and not overinflated. Extra bright lighting is located at this station to ensure that no defects are missed. Our technicians inspect the entire surface area inside and out, looking for any defect that may compromise the integrity of the glove. All types of mechanical damage are caught at this stage; even those that pass dielectric testing. This is the most important stage in our process seeing as this is the last step where failures can be caught. Only our most experienced, well qualified, technicians perform this task.



Electrical failures occur due to a breakdown in the insulating properties of the rubber. The electricity punctures through the rubber, introducing electrified water into the grounded water, thus, causing what’s known as a “dead short”. Any glove that fails during dielectric testing is removed from the tester and is defaced to ensure no future field use. The remaining gloves are cycled through testing again to ensure the full duration of testing time is achieved. All electrical and visual failures are logged and turned into our administration personnel to inform the customer of the failures. New gloves are kept in stock and customers are given the option to replace any failures. All new gloves are run through appropriate testing and visual inspection.



To stay compliant with OSHA, all passing electrical glove testing pieces are stamped with the necessary information along with personalized or informative details requested by our customers. A unique JM stamp detailing the voltage applied during the test, along with the maximum field use voltage is applied. The gloves are then stamped according to the date they are tested, this allows customers to easily identify gloves that are in and out of compliance. Personalized information for tracking such as employee ID #’s, employee names, rotation numbers/letters, and date due back for testing can be requested to be placed on the gloves. For customers that do not have a unique identifying system for their equipment, an identifying number is applied to the inside of each glove.



Final Inspection begins when a lead technicians is called to inspect all technicians’ stamps for accuracy. All stamps are checked against any paperwork submitted by our customers to ensure special requests are being met; and, all information has been logged correctly by our Receiving Dept.



The inside of each glove is powdered to help keep the end users hands dry for the initial use. For easy identification, each pair of gloves is packaged in a clear bag and heat sealed. The heat seal allows customers to know when a pair of gloves has been issued out for service. Labels are applied to boxes to help our customers to easily identify contents without our customers having to open each box. This makes for easy distribution back to their employees and storage. Qualified Technicians generate a test report and send with each order for record keeping purposes.



Once all equipment has been tested and inspected it is
sent back to you ready for use! Need new gloves? JM Test Systems also sells new gloves which are tested prior to being shipped to you.
Read more in our GLOVE TESTING FAQ

Our electrical safety lab provides testing on a wide range of products.

Services include gloves (lineman’s / arc flash glove testing), blankets, covers, sleeves, sticks, grounds, and more. Our glove testing labs are located in Baton Rouge Louisiana, Mattoon Illinois, Clute and San Angelo Texas.

Glove Testing Quote Builder

Use our glove testing quote builder to tell us what class gloves you need to test and submit your list for a quick testing quote.

Electrical Safety Lab

The Electrical Safety Laboratory (ESL) at JM Test Systems provides solutions in all areas of PPE and other electrical safety equipment supplies.


PPE Management Program

JM Test Systems’ PPE Rotation Management Program helps keep you in compliance with all OSHA safety standards.


Salisbury knows that lives depend on the quality of their products. That’s why Salisbury production facilities manufacture rubber insulating gloves that comply with the highest possible standards and regulations.

Salisbury rubber insulating gloves have earned the reputation for superior performance – meeting and exceeding the requirements for current ASTM D120 specifications.

Our gloves are tested to ASTM D120/IEC903 specifications.

  • Meet ASTM D120 and IEC/EN 60903 standards
  • All ASTM voltage classes available
  • Single and two color gloves available
  • Full range of sizes (8-12), including half sizes
  • Our Salisbury exclusive Type II Salcor® glove in Class 00 & 0.
  • Gloves are available in four styles:
    • Straight Cuff
    • Contour Cuff
    • Bell Cuff
    • Flare Cuff

ASTM Class 00 & 0

Low Voltage Gloves

Salisbury – The Market Leader

The low voltage insulating rubber gloves are offered in Class 00 and Class 0. Class 00 gloves are available in red Type I Natural Rubber, blue Type II Salcor™ Rubber and NEW SALISBURY ADVANTAGE contrasting blue/orange Type II Salcor™ Rubber.

2 color advantage- The contrast between the thin outer orange color against the inner blue color makes inspecting for cuts and tears easier when the glove is inflated or stretched.

Class 0 gloves are available in red, yellow, black and contrasting black/yellow Type I Natural Rubber and blue or contrasting blue/orange Type II Salcor™ Rubber.

Most Low Voltage gloves are available in a full range of sizes from 8 through 12, including half sizes.

Salisbury by honeywell E011BLO10 low voltage gloves


Salisbury by Honeywell E014R10H love voltage gloves


Salisbury by Honeywell low voltage gloves E001BL9H


ASTM Class 1, 2, 3, 4

High Voltage Gloves

Salisbury – The Market Leader

Class 1 – Class 4 high voltage insulating rubber gloves are available in traditional straight cuff, bell cuff, flare cuff and contour cuff design in Type I, Natural Rubber. Colors ranges are all black, all red, all yellow, red/black and yellow/ black. Salisbury offers the most extensive range of styles and hand sizes.

Salisbury also offers electrical insulating rubber mittens (Class 1-4) in bell cuff design.

Most High Voltage gloves are available in a full range of sizes from 8 through 12, including half sizes.

insulating rubber gloves sizing method To determine glove size, measure the circumference around the palm. Allow for additional room if fabric glove liners are to be worn, especially with thermal liners.

Salisbury straight cuff high voltage rubber insulating gloves in stock at JM Test Systems


Salisbury contour cuff high voltage rubber insulating gloves in stock at JM Test Systems


Salisbury bell cuff high voltage rubber insulating gloves in stock at JM Test Systems


Safety Glove Size Charts

Taking the time to accurately measure and select the correct glove size is crucial. Without correct-fitting gloves, employees have a higher risk of being unprotected, which can lead to unwanted hand injuries.


Measure the width of the dominant hand with a soft cloth tape measure. The dominant hand measurement is preferred (right if you’re right-handed and left if you’re left-handed) because it’s the largest hand.

US Sizes EU Sizes
6 – 7 Inches XS 152 – 178 Milimeters EU – 6
7 – 8 Inches S 178 – 203 Milimeters EU – 7
8 – 9 Inches M 203 – 229 Milimeters EU – 8
9 – 10 Inches L 229 – 254 Milimeters EU – 9
10 – 11 Inches XL 254 – 279 Milimeters EU – 10
11 + Inches XXL 279 + Milimeters EU – 11


Another method to determine glove size is measuring the length of your hand. This is done by measuring from the bottom edge of the palm to the tip of the middle finger as pictured in the graphic.

US Sizes EU Sizes
6 5/16Inches XS 160 Milimeters EU – 6
6 3/4Inches S 171 Milimeters EU – 7
7 3/16 Inches M 182 Milimeters EU – 8
7 9/16 Inches L 192 Milimeters EU – 9
8 1/6 Inches XL 204 Milimeters EU – 10
8 7/16 Inches XXL 215+ Milimeters EU – 11

Leather Protector Gloves should always be worn over Rubber Insulating Gloves to provide the needed mechanical protection against cuts, abrasions and punctures. All Salisbury Leather Protectors meet ASTM F696 standards.

Clearance table for leather protectors per ASTM F496

It is the responsibility of the purchaser to specify the overall length of the protector gloves. The Clearance Table shows the minimum distance which shall be allowed between the protector glove cuff and the bead of the rubber glove per ASTM F496 Specifications.

Glove Class Min. Distance Between Protectors & Rubber Gloves
in. mm
00, 0 1/2 13
1 1 25
2 2 51
3 3 76
4 4 102
Glove Class Leather Protector Cuff
00, 0 1/2″ from cuff
1 1″ from cuff
2 2″ from cuff
3 3″ from cuff
4 4″ from cuff

The minimum distance from the leather protector cuff to the bead of the rubber glove for this Class 2 glove is 2 inches.