What Are StratoGrey Static Shielding Bags?
StratoGrey™ static shielding bags are specialized ESD (electrostatic discharge) packaging designed to protect sensitive electronic components during storage, handling, and shipping. Unlike standard anti-static bags that only prevent static buildup, static shielding bags actively block external electrostatic fields from reaching the contents inside.
The StratoGrey line features a distinctive semi-transparent grey design with three protective layers:
- Outer static dissipative layer – Prevents triboelectric charging
- Middle conductive metal layer – Creates a Faraday cage effect to shield contents
- Inner static dissipative layer – Safely dissipates any internal static charges
Common Uses for Static Shielding Bags
Electronics manufacturers, repair labs, and assembly facilities rely on StratoGrey bags daily to protect:
- Circuit boards and PCBs (printed circuit boards)
- Computer hard drives (HDD and SSD)
- Memory modules (RAM, flash storage)
- Semiconductors and integrated circuits
- Sensitive sensors and measuring equipment
- Communication devices and components
Why Choose StratoGrey Over Standard Anti-Static Bags?
Standard pink anti-static bags only prevent static buildup inside the bag. They do NOT protect against external electrostatic fields. If someone walks across a carpet wearing synthetic clothing and picks up a pink anti-static bag, that external charge can still damage the electronics inside.
StratoGrey static shielding bags provide complete protection with a conductive metal layer that acts as a Faraday cage, blocking external static charges from penetrating the bag. This makes them essential for:
- High-value electronics (where damage costs exceed bag costs)
- Ultra-sensitive components (military, aerospace, medical devices)
- Environments with high static risk (low humidity, synthetic flooring)
- Shipping and transport (where ESD control is limited)
StratoGrey Specifications
- Thickness: 2.8 mil (heavy-duty protection)
- Material: Multi-layer laminate with metallized polyester
- Surface Resistance: 10⁴ to 10¹¹ ohms (meets ESD S20.20 standards)
- Transparency: Semi-transparent grey (contents visible for inventory)
- Closure Options: Flat bags, zipper bags, and custom sizes available
- Reusability: Can be reused 2-3 times if undamaged and properly stored
Who Makes StratoGrey Bags?
StratoGrey is a product line from LK Packaging (formerly Elkay Plastics), a trusted manufacturer of industrial and protective packaging for over 50 years. LK Packaging specializes in ESD control products that meet or exceed industry standards including ANSI/ESD S20.20 and MIL-PRF-81705.
Wholesale Pricing & Fast Shipping
Prism Pak offers wholesale pricing on StratoGrey static shielding bags with no minimum order requirements. We stock the most common sizes for same-day shipping. Need custom sizes or high-volume orders? Contact us for a quote.
Order StratoGrey bags today and protect your electronics from costly ESD damage.
Static Shielding Bag FAQs
What is a static shielding bag?
A static shielding bag is a multi-layer ESD bag with a conductive metal layer that forms a Faraday cage, blocking outside electrostatic fields from reaching the contents. StratoGrey static shielding bags are 2.8 mil thick and built from three layers: a static dissipative outer layer, a conductive metal middle layer, and a static dissipative inner layer.
What is the difference between pink anti-static bags and static shielding bags?
Pink anti-static bags only prevent static from building up inside the bag, while static shielding bags also block external static charges from reaching the contents. Use pink anti-static poly for general parts handling, and StratoGrey static shielding bags for circuit boards, hard drives, memory modules, and other ESD-sensitive electronics that are stored or shipped outside a controlled ESD workstation.
How thick are StratoGrey static shielding bags?
StratoGrey static shielding bags are 2.8 mil thick, a heavy-duty gauge made from a multi-layer laminate with metallized polyester. They are available as flat bags and zipper (seal top) bags in stock sizes, with custom sizes available on request.
Do StratoGrey bags meet ESD standards?
Yes. StratoGrey bags have a surface resistance of 10⁴ to 10¹¹ ohms and meet or exceed ANSI/ESD S20.20 and MIL-PRF-81705 requirements for ESD protective packaging, which is why they are used in electronics, military, aerospace, and medical device operations.
Can static shielding bags be reused?
StratoGrey bags can typically be reused 2 to 3 times if they are undamaged and properly stored. Retire any bag with punctures, tears, deep creases, or heavy abrasion, because damage to the metallized shield layer breaks the Faraday cage and the bag no longer blocks external static fields.
Can you see what is inside a StratoGrey bag?
Yes. StratoGrey bags are semi-transparent grey, so parts and labels stay visible for picking and cycle counts without opening the bag. That visibility is the main practical advantage over opaque foil shielding bags.
