Desco 66483 Statfree Hj Dissipative Dual Layer Rubber Roll, Blue, 30" X 72"
Desco 66483 — Statfree HJ Dissipative Dual Layer Rubber Roll, Blue, 30" × 72"
The Desco 66483 Statfree HJ is a dissipative dual layer rubber roll for ESD-safe worksurface installations. 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. Made in Japan.
Key Specifications
| SKU / Part Number | 66483 |
| Series | Statfree HJ |
| Color | Blue |
| Dimensions | 30 in × 72 in |
| 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 worksurface 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 worksurfaces meeting ANSI/ESD S20.20. 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. The HJ is also manufactured in Japan vs. USA for the T2 Plus.
Frequently Asked Questions
Does the Desco 66483 need to be grounded to work?
Yes. Like all ESD worksurface mats and rolls, the 66483 must be properly grounded to dissipate ESD charges. The conductive bottom layer provides the low-resistance path to ground. Connect the mat 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 roll 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 30" x 72" dimension indicate — is this a cut mat or a roll?
The Desco 66483 is a fixed-dimension piece (30 in × 72 in), not a continuous roll that is cut to length. This size covers a standard 30" × 72" (6-foot) workbench surface in a single piece, making it suitable for full single-station bench coverage without cutting.
