| Applications |
Electronic Enclosures |
 |
| RFI/EMI Shielding |
Seams |
| Grounding |
Doors |
| Electrostatic Discharge (ESD) |
Back Panel I/Os |
| Electromagnetic Pulse (EMP) |
Removable Panels |
|
Bezels |
| Typical Equipment |
Control Openings |
| Computers |
Vents |
| Data Processing |
|
| Telecommunications |
Product Forms |
| Instrumentation |
Gaskets |
| Medical Diagnostics |
Seals |
| Industrial Controls |
O-Rings |
| Office Products |
Grounding Pads |
| Automotive |
Die-cuts |
| |
I/O Interface Gaskets |
Long-Term Effectiveness
The elastomeric material greatly resists change due to heat
exposure. In fact, it is formulated to function optimally at
temperatures from -100ºF up to +480ºF (-75ºC
to +250ºC) , making it ideal for applications in the automotive
industry and in other high temperature situations. ULTRA-VANSHIELD®
components are formulated for flammability resistance which
meets ASTM Specification D4205-93, subsection 15.6, horizontal
burn (HB). Additionally, ULTRA-VANSHIELD®
materials can be formulated to meet ASTM D4205-93, subsection
15.6 for vertical flame resistance specification (V-0).
| Endurance tests of
ULTRA-VANSHIELD® dual elastomer gaskets through
25,000 cycles of repeated compressions indicate no change
in volume resistivity and no measurable compression set
(Table 2). Accelerated aging
tests provide similar results with almost no change in
volume resistivity (Table 2). |
table 2. Long term performance characteristics
|
ULTRA-VANSHIELD® standard
silicone-based materials easily lend themselves to optional
formulations which are application-specific; such as, higher
flame retardancy and low compression/deflection characteristics.
Dual elastomer extrusions can be made in a wide range of cross-section
profiles. Flexibility in geometry is an important concept
for a designer to consider. A variety of profiles are now
available and almost any shape can be tooled.
Simple means of mounting ULTRA-VANSHIELD®
gaskets include metal C-clips, rivets or pressure sensitive
adhesive tape. The conventional tape used is a non-conductive
pressure sensitive adhesive which adheres well to rubber,
metal or plastic. Conductive adhesive tapes are also available.
Another alternative is a press-fit mounting into a groove.
One such gasket is used in the telecommunications industry
as shielding for cellular telephones. The overall diameter
is in the range of 1 to 2 mm while still retaining all conductive
and mechanical properties of larger gaskets.
Click here for installation attachment
methods and optional configurations.
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