CHO-SEAL 1285 – 0.81mm | Parker ChomericsCustom pads and gaskets priced instantly and made to order within 24 hours!

CHO-SEAL 1285 – 0.81mm | Parker Chomerics

Conductive Elastomer | Silver-Aluminium Filled Silicone

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  • Reduces electromagnetic interference
  • Maintains sealing performance
  • Suitable for high-reliability applications
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SKU: 93278 Categories: , , , Brand:

Description

Parker Chomerics CHO-SEAL 1285 is a conductive elastomer gasket material featuring silver-plated aluminium filler dispersed in a silicone elastomer binder. This combination provides effective EMI/RFI shielding performance while retaining the flexibility and environmentally sealing characteristics of silicone.

The material is commonly used where EMI attenuation and environmental sealing are required together, offering corrosion resistance and electrical continuity in assemblies across aerospace, defence, communications, industrial and other electronic systems. CHO-SEAL 1285 supports a balance of shielding effectiveness and mechanical properties appropriate for a wide range of electronic enclosures and interfaces.

MPN: 40-20-1020-1285

Benefits

  • Reduces electromagnetic interference
  • Maintains sealing performance
  • Suitable for high-reliability applications

Features

Recommended Uses

  • Avionics & Defence: Electronic enclosures and bay doors, Communication and avionics housings
  • Telecommunications & Network: Shielded cabinets and rack systems, Base stations and RF modules
  • Industrial Electronics: Control and automation panel EMI sealing, Embedded electronics housings
  • Automotive & Transportation: Electronic control modules, EMI management in advanced vehicle systems
Physical
Property Test Procedure<br>(Type of Test) CHO-SEAL 1285
Conductive Filler – Ag/Al
Elastomer Binder – Silicone
Type (Ref. MIL-DTL-83528) – Type B
Volume Resistivity, ohm-cm, max.,<br>as supplied without pressure<br>sensitive adhesive <p style=”border-bottom: 1px solid black”>CEPS-0002<sup>(c)</sup> (Q/C)</p><p>MIL-DTL-83528 (Q/C)</p> <p style=”border-bottom: 1px solid black”>Not Applicable</p><p>0.008</p>
Hardness, Shore A ASTM D2240 (Q/C) 65 ± 7
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) 100/300
Tear Strength, lb/in. (kN/m), min. ASTM D624 (Q) 30 (5.25)
Compression Set,<br> 70 hrs at 100°C, % max.<sup>(A)</sup> ASTM D395,<br>Method B (Q) 32
Thermal
Property Test Procedure<br>(Type of Test) CHO-SEAL 1285
Low Temperature Flex TR10, <br>°C, min. ASTM D1329 (Q) -65
Maximum Continuous Use<br>Temperature, °C<sup>(B)</sup> – 160/200
Thermal Conductivity,<br>W/m-K (Typical) 300 psi (2.07 MPa) ASTM D5470 2.2
Electrical
Property Test Procedure<br>(Type of Test) CHO-SEAL 1285
<strong>Shielding Effectiveness, dB, min.<sup>(F)</sup></strong><br>- 200 kHz (H Field)<br>- 100 MHz (E Field)<br>- 500 MHz (E Field)<br>- 2 GHz (Plane Wave)<br>- 10 GHz (Plane Wave)<br>- 40 GHz (Plane Wave) <br><br>Method 2:<br>MIL-DTL-83528<br>Para. 4.5.12 (Q) <strong>Method 2:</strong><br>60<br>115<br>110<br>105<br>100<br>Not Tested
Electrical:

Electrical Stability, ohm-cm, max.

Property Test Procedure<br>(Type of Test) CHO-SEAL 1285
Heat Aging <p style=”border-bottom: 1px solid black”>CEPS-0002<sup>(C)</sup> (Q)</p><p>MIL-DTL-83528<br>Para. 4.5.15 (Q/C)</p> <p style=”border-bottom: 1px solid black”>Not Applicable<sup>(H)</sup></p><p>0.010</p>
Resistance During Vibration MIL-DTL-83528<br>Para. 4.5.13 (Q) 0.012
Resistance After Vibration MIL-DTL-83528<br>Para. 4.5.13 (Q) 0.008
Post Tensile Set Volume<br>Resistivity MIL-DTL-83528<br>Para. 4.5.9 (Q/C) 0.015
Regulatory
Property Test Procedure<br>(Type of Test) CHO-SEAL 1285
EMP Survivability,<br>kA per in. perimeter MIL-DTL-83528<br>Para. 4.5.16 (Q) >0.9
RoHS Compliant – Yes
UL 94 Flammability Rating UL 94 Not Tested

CHO-SEAL 1285 Datasheet





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