Specifications

Spira’s EMI/RFI products are made using the finest materials and processes in compliance with AS9100 and ISO 9001. Material certifications are available upon request when your order is placed. Materials used are typically purchased to the following specifications unless otherwise noted or requested. See below for the Material Compatibility Chart.

View Material Specifications and Compatibility datasheet in pdf format for easy printing.

Material
Component/Process
Specification
Storage
Temp
Operating
Temperature
Spiral
Beryllium Copper
ASTM-B-194
Ambient
-73 to 232° C,
-100 to 450° F
Stainless Steel
AMS-5906
Ambient
< 704° C, < 1300° F
Plating
Chemical Film
MIL-DTL-5541 Class 3
Ambient
< 66° C,  < 150° F
Chemical Film (RoHS)
MIL-DTL-5541 Class 3, Color Clear
Ambient
< 66° C,  < 150° F
Gold
MIL-DTL-45204, Type II, Grade C, Class 1
Ambient
< 274° C,  < 525° F
Pure Tin (RoHS)
ASTM-B-545
Ambient
< 150° C, < 302° F
Tin-Lead
90% Tin, 10% Lead per AMS-P-81728
Ambient
< 150° C, < 302° F
Sulfamate Nickel
AMS-QQ-N-290B, Class 2
Ambient
< 649° C, < 1200° F
Rubber
EPDM (Solid)
ASTM D2000 M3 BA
Ambient
-80 to 275° C,
-112 to 527° F
Fluorosilicone (Solid)
Blue per AMS-R-25988, Type II,
Class I, Grade 40
Ambient
-62 to 204° C,
-80 to 400° F
Fluorosilicone (Sponge)
AMS-3323
Ambient
-62 to 204° C,
-80 to 400° F
Neoprene (Sponge)
ASTM-D-6576, Type II, Grade A,
Condition-Medium
Ambient
-54 to 121° C,
-65 to 250° F
PVC Cord
Commercial Grade
Ambient
-30 to 160° C,
-22 to 320° F
Silicone (Solid)
A-A-59588, Class 2B, Grade 40 or 60.
See product spec sheet for grade.
Ambient
-38 to 204° C,
-100 to 400° F
Silicone (Sponge)
Red per ASTM-D-6576, Type II, Grade C, Condition-Medium
Ambient
-38 to 204° C,
-100 to 400° F
Thermal Plastic Rubber
ASTM-D-2000  CA710, C32, EA14, F19
Ambient
-80 to 275° C,
-112 to 527° F
Adhesive
Epoxy
2216 B/A per ASTM-D-2000
Ambient
-80 to 275° C,
-112 to 527° F
Fluorosilicone
(Enduro-Shield core)
Dow Corning 730 RTV
≤ 32° C
-57 to 260° C,
-71 to 500° F
Fluorosilicone (Red)
Dow Corning Q4-2817 Sealant
≤ 32° C
-57 to 260° C,
-71 to 500° F
Neoprene (Contact Cement)
MMM-A-1617, TYPE II
-16° to 27° C
-67 to 177° C,
-89 to 351° F
PSA (Neoprene)
Rubber/Acrylic adhesive
Ambient
-34 to 65° C,
-30 to 150° F
PSA (Silicone & Fluorosilicone)
Acrylic Adhesive
24° C
-40 to 121° C,
-40 to 250° F
Silicone  (Enduro-Shield standard core)
Dow Corning 732 RTV Per MIL-A-46106, Group I, Type I
≤ 32° C
-60 to 177° C,
-76 to 351° F
Silicone (Enduro-Shield
Stainless Steel gaskets)
Dow Corning 737
≤ 32° C
-65 to 177° C,
-85 to 351° F
Silicone
(Non-acetic acid base)
Dow Corning 3145 RTV Per MIL-A-46146, Group II, Type I
≤ 32° C
-50 to 200° C,
-58 to 392° F
Silicone
(White, non-outgassing)
Dow Corning 61125
≤ 32° C
-60 to 177° C,
-76 to 351° F
Other
Connector-Seal
Metal Frame/Core
6061-T6 Aluminum per AMS-4027 (SSCG)
Ambient
< 343° C, < 650° F
Stainless Steel per AMS-5516M (Core)
Ambient
< 704° C, < 1300° F
Dovetail Groove Cutter
Tungsten Carbide
Ambient
N/A
AirVent Filter Extrusion
6061-T4 Aluminum per AMS-QQ-A-200/8
Ambient
< 343° C, < 650° F
Fan Filter Frame
6061-T4 Aluminum per AMS-4026
Ambient
< 343° C, < 650° F
Honeycomb Panel
Aluminum per AMS-C-7438
Ambient
< 204° C, < 400° F
Brass per ASTM-B-36/B 36M.
Foil soldered together per ASTM-B-32
Ambient
< 230° C, < 446° F
Threaded Insert
Cadmium plated Alum. AMS-QQ-P-416
Ambient
N/A

Compatibility Chart

The shielding effectiveness of EMI gasketed joints can be significantly affected by corrosion. The corrosion of concern is a galvanic cell between the gasket and the joint surface in the presence of moisture or salt fog atmospheres. The chart below lists six common materials used in EMI gaskets along with their degree of compatibility with common joint surface material/plating combinations. (The chart was extracted from ARP-1481, published by the Society of Automotive Engineers.) The legend describes the degree of compatibility and/or requirements for obtaining a corrosion free joint. The term "requires sealing" means that the gasketed joint surfaces must be protected in some way from the moisture and/or salt fog atmospheres.

View Chart Larger
Download Material Specifications and Compatibility datasheet (.pdf)
Material Compatibility Chart
* Standard gasket materials used by Spira.

Legend:
A - Compatible
B - Requires sealing only if exposed to salt atmosphere or high humidity. Edge plating may be satisfactory.
C - Requires sealing if exposed to humid environment.
D - Compatible in environment of controlled temperature and humidity only.
E - Requires sealing regardless of exposure.
X - Not usable.

RoHS Compliance

As noted throughout this catalog, there are RoHS compatible options available for all tin plated Spira gaskets. The RoHS versions (IW or EIW) use special tin plating instead of our standard tin/lead plating. The RoHS compatible tin plating has been tested for whisker growth and whisker growth was not detected. Please contact us for a copy of the test results or more information.


Veteran Owned Small Business.
All products manufactured in the United States of America.

Click to view Spira's Compliance Information.

Click to view Spira's Terms and Conditions.

americanflag