Desco Industries 66485 Statfree HJ Dissipative Dual Layer Rubber Dissipative Tray Liner, 16 in x 24 in x .080 in with .750 in Radius Corners, Blue
Desco 66485 — Statfree HJ Dissipative Dual Layer Rubber Tray Liner, Blue, 16" × 24" × .080" with .750" Radius Corners
The Desco 66485 Statfree HJ is a dissipative dual layer rubber tray liner for use as an ESD-safe worksurface in tote trays, storage containers, and workstation inserts. The HJ series uses an abrasion-resistant rubber compound (hardness 80–90 Shore A) for greater resistance to cuts, abrasion, stretching, and tearing compared to standard rubber mat materials — suited for high-wear EPA environments. The two-layer construction delivers a dissipative top surface meeting ANSI/ESD S20.20 requirements and a conductive bottom layer for grounding and ESD monitor compatibility.
Key Specifications
| SKU / Part Number | 66485 |
| Series | Statfree HJ |
| Color | Blue |
| Dimensions | 16 in × 24 in × .080 in |
| Corner Radius | .750 in radius corners |
| Top Layer Resistance (Rtt) | Dissipative: 1 × 10⁶ to <1 × 10⁹ Ω |
| Bottom Layer Resistance (Rtt) | Conductive: <1 × 10⁶ Ω (Limited Lifetime Warranty) |
| Material | Abrasion-resistant rubber compound (80–90 Shore A hardness) |
| Compliance | ANSI/ESD S20.20, ANSI/ESD S4.1, RoHS compliant |
| Origin | Made in Japan |
Key Features
- Abrasion-Resistant Rubber Compound: Higher hardness (80–90 Shore A) provides greater resistance to cuts, abrasion, stretching, and tearing than standard rubber mat compounds — ideal for high-wear or high-traffic EPA tray liner applications. Suitable for use in soldering applications with flux and other chemicals.
- Dissipative Top Layer: Meets ANSI/ESD S20.20 worksurface required limits and ANSI/ESD S4.1 recommendations. Does not generate static charge; controls discharge rate from ESD-sensitive devices on the surface.
- Conductive Bottom Layer (Limited Lifetime Warranty): Low-resistance path to ground reduces Rtg from top surface to grounding point and enables use with ESD workstation continuous monitors.
- Laser Engraved Identification: ESD protective symbol, specifications, and manufacturer information on the bottom layer for product identification and EPA auditing.
- RoHS Compliant. Made in Japan.
How Does the Statfree HJ Differ from the Statfree T2 Plus?
Both the HJ and T2 Plus are dissipative dual layer rubber tray liners meeting ANSI/ESD S20.20 requirements. The key difference is the rubber compound: the HJ uses an abrasion-resistant compound (80–90 Shore A) engineered for durability and wear resistance in high-use environments. The T2 Plus uses a nitrile oil-resistant compound with UV stabilizers, optimized for chemical resistance and long-term electrical stability. Choose the HJ for high-wear tray liner applications; choose the T2 Plus where chemical and oil exposure is the primary concern.
Frequently Asked Questions
Does the Desco 66485 need to be grounded to work?
Yes. Like all ESD worksurface liners, the 66485 must be properly grounded to dissipate ESD charges. The conductive bottom layer provides the low-resistance path to ground. Connect the liner to a common point ground using a mat grounding cord at the groundable snap or via contact with a grounded conductive surface.
Is the Statfree HJ tray liner suitable for soldering workstations?
Yes. The HJ abrasion-resistant rubber compound is suitable for use in soldering applications with flux and other common chemicals used at solder workstations within an EPA.
What does the .080 in thickness mean for tray liner selection?
The .080 in thickness of the HJ series is slightly thicker than the .060 in T2 Plus tray liners. The additional thickness contributes to the HJ's durability and cushioning characteristics. When selecting a tray liner, verify the interior depth of your tote tray or container to ensure the liner fits without interfering with tray stacking or lid closure.
