- Minimal surface preparation is required with Spira EMI gaskets.
A clean surface will encourage the highest level of shielding
- For environmental sealing a 32 micron finish is recommended.
- We recommend you do not use conductive sealants with Spira EMI
Our shielding is achieved through the metal-to-metal contact between
and joint surfaces. Conductive sealants will merely get in the
way of this.
- To apply gaskets that do not have adhesive backing, you can
use either super
glue, epoxy or RTV. Be careful to apply the adhesive only to the
of the gasket. Do not get glue on the spiral as it will degrade
Fasteners may be placed on either side of the gasket. Care should be
taken to avoid puncturing the spiral. To maintain the integrity of the
EMI bond it is important that each fastener is referenced to the chassis
by making good metal-to-metal contact.
When using the gasket to achieve an environmental seal, care must be
taken to ensure that the fastener placement does not compromise this
Screw makes EMI bond with chassis. Screw going through rubber elastomer
maintains the integrity of the environmental seal.
The risk of moisture leak is minimized by the use of a rubber washer.
The metal nutplate ensures that the screw will be referenced to the
chassis to maintain the integrity of the EMI seal.
The use of two rubber washers insulates against environmental leakage,
but also prevents the screw from being referenced to the chassis.
This creates an EMI "hole" and can significantly degrade
the shielding quality of the joint.
Moisture can leak through the screw hole, compromising the environmental
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All products manufactured in the United States of America.
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