Flexi Shields
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This gasket uses our high shielding tin plated beryllium copper Spira-Shield as its base. We inject a liquid silicone adhesive into the center of the spiral, which hardens and bonds completely to the metal, making this gasket extremely durable when properly used. See below for ordering information.

Application Information

Because of its durability, this gasket is ideal for groove-mounted sliding applications, such as in connectors. This gasket material is used in our Spira-Seal O-rings and Connector-Seal gaskets.

Materials:
Spiral: Tin/lead plated beryllium copper. (See Options for RoHS compliance.)
Electroplated, 90% tin, 10% lead per AMS-P-81728 (edges unplated).
Inner Core: Cured silicone adhesive.
Refer to Material Specifications for more information.

Shielding Quality:
This gasket offers shielding quality from 117 dB to 152 dB. The shielding quality may vary depending on your specific application. Refer to Shielding Quality  for more complete performance data.

Compression Force:
Endur-o-Shield gaskets come in three different resiliencies (as shown below). Optimal compression of the gasket is 25% of the diameter of the spiral. Since the force to compress the gasket is a function of the cube of the thickness of the beryllium copper ribbon, the compression forces shown are approximate. Some sizes are also available in low force. Please contact us for information.
Standard Force: ~30 pounds per linear inch compression.
Moderate Force: ~10 pounds per linear inch compression.
Low Force: ~1.5 pounds per linear inch compression.

Mounting:
This gasket is groove mounted. Refer to Groove Mounting Techniques for detailed mounting information.

Available Options

Custom Sizes:
We can manufacture Endur-o-Shield gaskets in any size diameter, from .034" up to .141". There may be a nominal tooling charge for special sizes. Please contact us with your requirements.

Plating:
Plating options can be specified by adding a prefix before the part number:
E: Edge tin/lead plating (includes edges) for high humidity or salt-fog environments
IW: RoHS compliant tin plating (Example: IWSIMS-08)
EIW: RoHS compliant edge tin plating for high humidity or salt-fog
Refer to Material Compatibility for more information.

Material:
Stainless steel material may also be substituted if desired. Please see the following chart for part number options.

Material
Force
No Plating
Tin/Lead Plating
RoHS Tin
Edge Tin/Lead
RoHS Edge Tin
Beryllium
Copper
Standard
Moderate
Low
--
SISS (default)
SIMS
SILS
IWSISS
IWSIMS
IWSILS
ESISS
ESIMS
ESILS
EIWSISS
EIWSIMS
EIWSILS
Stainless
Steel
Standard Moderate
Low
SINI
SINM
SINL
SITNI
SITNM
SITNL
IWSINI
IWSINM
IWSINL
--
--

Specify material by choosing the desired prefix from the table.

Example: SITNI-09; Tin Plated St. Steel, Standard Force

Special Core:
A special core can be specified by using the following option:
-F: Fluorosilicone (Example: SIMS-08-F)
-O: Silicone that meets outgassing requirements
-Z: Silicone which is a non-acetic acid adhesive (per MIL-A-46146)
Note: EMI/Environmental version in development. Contact us for more information.

Ordering Information:
Endur-o-Shield is sold by the piece in four foot lengths. It can be spliced together to make longer lengths upon request. Endur-o-Shield can also be ordered cut-to-length in specific sizes or you can cut it yourself using a sharp pair of scissors. To order o-rings please refer to the Spira-Seal O-Ring section, or the Custom Gaskets section.

Endur-o-Shield Part Numbers
(Tin/Lead Plated Beryllium Copper)
Recommended Groove Dimensions
Diameter Standard Force Moderate Force Low Force Depth (L)
+.002"
-.000"
Width (G)
+.007"
-.005"
Width (W)
+.000"
-.002"
.034" ± .002" SISS-02 SIMS-02 -- .023" .046" .033"
.047" ± .002" SISS-03 SIMS-03 -- .035" .063" .045"
.063" ± .003" SISS-04 SIMS-04 SILS-04 .046" .094" .060"
.070" ± .003" SISS-.070 SIMS-.070 SILS-.070 .053" .094" .067"
.078" ± .003" SISS-05 SIMS-05 SILS-05 .059" .109" .075"
.094" ± .004" SISS-06 SIMS-06 SILS-06 .070" .125" .090"
.103" ± .004" SISS-.103 SIMS-.103 SILS-.103 .077" .141" .099"
.109" ± .004" SISS-07 SIMS-07 SILS-07 .082" .156" .105"
.125" ± .004" SISS-08 SIMS-08 SILS-08 .094" .171" .121"
.139" ± .005" SISS-.139 SIMS-.139 SILS-.139 .104" .187" .134"
.141" ± .005" SISS-09 SIMS-09 SILS-09 .105" .187" .134"


See our Part Number Matrix for assistance with part numbers, options and product comparisons.

 
Endur-o-Shield

See Groove Mounting Techniques for complete mounting details.

More information is also available on Dovetail Groove Cutters.

Spira Endur-o-Shield
 
Outer Conductive Spiral
(Tin/Lead Plated Beryllium Copper)
Spira Spiral Resilient Inner Core (Solid Silicone)