Silicone

2984XH3E.03 New Parker Chomerics Cho-Seal EMI (Electro-Magnetic Interference) Die Cut Shield Patch Dots, Made of Nickel Plated Carbon (Ni/C) Fiber Shielding Matrix, Part Number 19-11-19907-S6305. Each bid quantity is for a Lot of One Hundred (100) EMI Patch Dots. You may bid / buy any number of lots, up to the total quantity available above. These were purchased at an industrial liquidation earlier this year, and they were in the original factory bags. We packaged them in heavy Ziplok bags for resale. They seem to be some kind of peel-and-stick dots. However, the white side does not peel off very easily – if at all. On most pieces we tested, it is *very* firmly attached, and when it does finally tear, it shreds into fibers sort of like Tyvek. The silicone is soft and pliable, but the adhesive is probably out of date (August 2005). We therefore recommend that you simply dab on a suitable liquid adhesive, and bond the EMI patch to your surface. Should be just the thing for screw holes and other small EMI leaks. The part number 19-11-19907-S6305 breaks down as follows: 19-11: Die cut product 19907: Parker internal drawing number S6305: Material Ni/C (Nickel plated carbon fiber) According to the calipers: Diameter: .379″ / 9.64 mm Thickness (including white backing): .029″ / 0.74 mm Thickness (including white backing): .024″ / 0.61 mm According to the manufacturer: S6305 — Good performance in moderately corrosive environments; material of choice for flange finishes needing “bite-through” for good electrical contact. Molded (M) or Extruded (E) — M/E Conductive Filler — Ni/C Elastomer Binder — Silicone Type (Ref. MIL-DTL-83528) — Not Applicable Volume Resistivity, ohm-cm, max., as supplied without pressure sensitive adhesive CEPS-0002 C(Q/C) 0.100 MIL-DTL-83528 (Q/C) Not Applicable Hardness, Shore A ASTM D2240 (Q/C) 65 ± 10 Specific Gravity ASTM D792 (Q/C) 2.00 ± 0.25 Tensile Strength, psi (MPa), min. ASTM D412 (Q/C) 200 (1.38) Elongation, % min. or % min./max. ASTM D412 (Q/C) 100 Tear Strength, lb/in. (kN/m), min. ASTM D624 (Q) 50 (8.75) Compression Set, 70 hrs at 100°C,% max. A ASTM D395, Method B (Q) 30 Thermal Low Temperature Flex TR10, °C, min. ASTM D1329 (Q) -45 Maximum Continuous Use Temperature, °C B — 150 Thermal Conductivity, W/m-K (Typical) 300 psi (2.07 MPa) ASTM D5470 0.8 Electrical Shielding Effectiveness, dB, min. F Method 1: CHO-TM-TP08 C(Q) Method 2: MIL-DTL-83528 Para.4.6.12 (Q) Method 3: CHO-TM-TP09 C (Q) Method 1 200 kHz (H Field) Not Tested 100 MHz (E Field) 100 500 MHz (E Field) 100 2 GHz (Plane Wave) 100 10 GHz (Plane Wave) 100 40 GHz (Plane Wave) 75 Electrical Stability, ohm-cm, max. Heat Aging CEPS-0002 C (Q) 0.250(E) MIL-DTL-83528 Para 4.6.15 (Q/C) Not Applicable Resistance During Vibration MIL-DTL-83528 Para 4.6.13 (Q) Not Applicable Resistance After Vibration MIL-DTL-83528 Para 4.6.13 (Q) Not Applicable Post Tensile Set Volume Resistivity MIL-DTL-83528 Para 4.6.9 (Q/C) Not Applicable Regulatory EMP Survivability, kA per in. perimeter MIL-DTL-83528 Para 4.6.16 (Q) Not Applicable RoHS Compliant — Yes UL 94 Flammability Rating — HB We used to have a link to the manufacturer’s site providing additional information, however, eBay made us remove it. The noose slowly tightens…