The lifespan of electrical insulating gloves is not based on an expiration date but is determined by proper storage, routine daily inspections, and scheduled electrical retesting. Damage or failure during any inspection requires immediate removal from service.

 The lifespan of electrical insulating gloves is not based on an expiration date but is determined by proper storage, routine daily inspections, and scheduled electrical retesting. Damage or failure during any inspection requires immediate removal from service. 

In-service testing intervals

Mandatory testing intervals are regulated by safety organizations like OSHA and guided by standards such as ASTM F496. 

Condition	Class 00 & 0 gloves	Class 1, 2, 3 & 4 gloves
Initial issue	Visually and air-tested before first use. A dielectric electrical test is recommended but often optional.	Must be electrically tested before initial issue.
After first issue (in service)	Visually and air-tested before each use.	Must be electrically retested every six months. Daily inspections are also required.
After repairs or suspected damage	Must be retested.	Must be retested.

Shelf life of unused gloves

Unused gloves held in storage also have testing requirements to ensure they remain safe to issue. 

• 12-month rule: New gloves that have been electrically tested but not issued must be re-tested before being placed into service if they have been in storage for over 12 months.
• Storage conditions: Proper storage extends shelf life. Gloves should be stored in their natural shape, in a cool, dark, and dry place, away from sunlight, heat, ozone, chemicals, and damaging vapors. 

Key inspection and maintenance practices

To maximize safety and extend the life of your gloves, follow these guidelines: 

• Perform a visual inspection: Before each use, inspect the gloves inside and out for physical signs of damage, such as:
  • Holes, cuts, or punctures
  • Embedded foreign objects
  • Ozone or UV damage (checking or surface cracking)
  • Chemical contamination (swelling, stickiness, or softening)
• Conduct an air test: Inflate the glove with air (either manually or with a pneumatic glove tester) to check for small pinholes or leaks that may not be visible.
• Wear protector gloves: Always wear leather protector gloves over rubber insulating gloves to prevent mechanical damage from cuts, abrasions, and punctures.
• Clean and dry properly: If your gloves become contaminated, wash them with mild soap and water. Ensure they are thoroughly dried before storage.
• Store correctly: When not in use, store your gloves in a protective bag, keeping them separate from sharp tools and heavy objects.