EMI Waveguide Gaskets

EMI Waveguide Gaskets

SSP fabricates EMI waveguide gaskets from the electrically conductive silicones that we make. Many of our materials are M83528 QPL listed.

Our in-house toolroom has machinists on staff who make the molds, dies, jigs, and fixtures we use for EMI waveguide gasket fabrication.

We offer a full certificate of analysis (COA) for every batch. Parker Chomerics CHO-SEAL offsets are available, and in low minimum order quantities.

 

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EMI Waveguide Gasket Materials

The table below describes some of our most popular materials for EMI waveguide gaskets.

SSP Product

Base Material

Fill Material

Key Features

SSP2569-65

Silicone

Silver-Copper

MIL-DTL-83528, Type A

QPL Listed

Use instead of CHO-SEAL® 1215

SSP2573-75

Fluorosilicone

Silver-Copper

MIL-DTL-83528, Type C

QPL Listed

SSP2571-85

Silicone

Silver-Copper

MIL-DTL-83528, Type K

QPL Listed

Use instead of CHO-SEAL® 1212

SSP2368-65

Silicone

Silver-Aluminum

MIL-DTL-83528, Type B

Use instead of CHO-SEAL® 1285

SSP2486-70

Silicone

Silver-Aluminum

MIL-DTL-83528, Type D

QPL Listed

Use instead of CHO-SEAL® 1287 and 1298

These EMI gasket materials comply with lettered sections in MIL-DTL-83528 and are part of the M83528 Qualified Product List (QPL) from the Defense Logistics Agency (DLA). Most of the SSP materials in the table above represent offsets to CHO-SEAL® products from Parker Chomerics.

EMI Waveguide Gasket Flanges

Specialty Silicone Products (SSP) makes EMI waveguide gaskets that combine environmental sealing and insulation with shielding against electromagnetic interference (EMI). This includes EMI waveguide gaskets for UG, CPR, and CMR flanges in MIL-SPEC and EIA waveguide sizes.

MIL-SPEC flanges are designated as UG-xxxx/U where the x’s represent a variable-length catalog number. 

CPR stands for Connector, Pressurizable, Rectangular and corresponds to EIA sizes. 

CMR stands for Connector, Miniature, Rectangular and corresponds to MIL-SPEC and EIA sizes.

The Electronics Industries Alliance (EIA) was a trade group that defined CPR and CMR flanges along with standard sizes for rectangular waveguides. Each EIA size starts with the letters WR (waveguide rectangular) followed by the waveguide’s broad wall dimension in hundredths of an inch rounded off. Examples of EIA waveguide sizes include WR28, WR112, and WR137.

EMI waveguide gaskets with CPR and CMR flanges begin with the letters CPR or CMR followed by the numbers (but not the letters WR) in the EIA waveguide size. For example, CMR-137 refers to an EMI waveguide gasket with a CMR flange and EIA waveguide size of WR137. SSP can produce gaskets like this for you from the materials we make and using our CNC knife cutter.  We can also mold EMI waveguide gaskets. 

Flat EMI Waveguide Gaskets

WR28

UG-599/U

M83528/013001

WR42

EG-595/U

EG-597/U

M83528/013003

WR62

UG-419/U

M83528/013005

WR90

UG-1736/U

UG-1737/U

M83528/013010

WR112

UG-1734/U

UG-1735/U

M83528/013016

WR137

UG-1732/U

UG-1733/U

M83528/013020

M83528/013021

WR159

UG-1730/U

UG-1731/U

M83528/013024

M83528/013025

WR187

UG-1728/U

UG-1729/U

M83528/013027

M83528/013028

WR229

UG-1726/U

UG-1727/U

M83528/013031

M83528/013032

WR284

UG-53/U

UG-584/U

UG-1724/U

UG-1725/U

M83528/013033

M83528/013034

M83528/013035

WR340

UG-533/U

UG-554/U

UG-435A/U

UG-437A/U

M83528/013040

M83528/013041

WR650

UG-417A/U

UG-418A/U

M83528/013042

M83528 EMI Waveguide Gaskets

D-Shaped Cross Section

M83528 rectangular EMI waveguide gaskets with a D-shaped section gaskets come in six sizes. They’re ideal for use with rectangular connectors.  These EMI gaskets can be molded out of standard compounds and used with or without a groove. Additional sizes available. 

MIL-DTL-83528 Part NumberWLHT
MinMaxMinMaxMinMaxMinMax
M83528/006×001.2857.24.2957.49.98324.97.99325.22.078.088.122.132
M83528/006×001.48512.32.49512.57.98324.97.99325.22.078.088.122.132
M83528/006×001.61915.72.62915.981.24331.571.25331.83.078.088.122.132
M83528/006×001.81520.70.84521.462.98575.823.01576.58.078.088.122.132
M83528/006×0011.32533.661.35534.425.265133.735.295134.49.078.088.122.132
N/A.44911.35.48912.42.92523.50.96524.51.093.103.093.103

O-Shaped Cross Section

M83528 rectangular EMI waveguide gaskets with an O-shaped section gaskets come in five sizes. They’re ideal for use with rectangular connectors.  These EMI gaskets can be molded out of standard compounds and used with or without a groove. Additional sizes available.

 

MIL-DTL-83528 Part NumberDimensions (Configuration C)
ABT
M83528/013×0131.368
± .012		34.75
.03		.86822.05
.25		.103
±.003		2.62
.08
M83528/013×0131.616
± .015		41.05
.38		.99125.17
.25		.103
±.003		2.62
.08
M83528/013×0131.866
± .015		41.05
.38		1.11628.35
.30		.103
±.003		2.62
.08
M83528/013×0132.449
± .020		62.20
.51		1.44936.80
.33		.139
±.004		3.53
.10
M83528/013×0133.451
± .024		87.66
.61		1.95149.56
.46		.139
±.004		3.53
.10

Angled Corners

M83528 rectangular EMI waveguide with angled corners come in many standard sizes. Additional sizes available upon request.

 

MIL-DTL-83528 Part NumberDimensions (Configuration A)
A
± .015 (0.38)		B
± .015 (0.38)		C
+ .015 (0.38) -.000 (0.00)		D
+ .015 (0.38) – .000 (0.00)		E
± .010 (0.25)		T
± .003 (0.08)		F Radius
± .010 (0.25)
M83528/013X001.75019.05.75019.05.1453.68.2857.24.1162.95.027.69.46911.91
M83528/013X003.87522.23.87522.23.1754.45.42510.80.1162.95.027.69.56314.30
M83528/013X0051.31333.351.31333.35.63016.00.3208.13.1403.56.027.69.87522.23
M83528/013X0071.49638.001.49638.00.76019.30.3859.78.1553.94.027.69.45011.43
M83528/013X0091.62541.281.62541.28.90522.99.40510.29.1694.29.027.69.46911.91
M83528/013X0101.59440.492.09453.19.40510.29.90522.99.1694.29.027.69.2506.35
M83528/013X0151.87547.631.87547.631.13028.70.50512.83.1804.57.027.691.1529.21
M83528/013X0161.75044.452.50063.50.50512.831.13028.70.1714.34.027.69.2506.35
M83528/013X0201.93749.202.68768.25.63316.081.38035.05.2065.23.027.69.2506.35
M83528/013X0211.53138.892.28157.94.63216.051.38235.10.1503.81.027.69.1253.18
M83528/013X0242.43861.933.18880.98.80520.451.60040.64.2576.53.027.69.3137.95
M83528/013X0251.75044.452.50063.50.80020.321.60040.64.160
.150		4.06
3.81		.027.69.1253.18
M83528/013X0273.50088.902.50063.501.88047.75.88022.35.2666.76.027.69.3137.95
M83528/013X0281.78445.312.78170.64.88222.401.88247.80.156
.141		3.96
3.58		.027.69.1253.18
M83528/013X0312.75069.853.87598.431.15529.342.30058.42.2706.86.027.69.3127.92
M83528/013X0322.00050.803.15680.161.15529.342.30058.42.1503.81.027.69.1253.18
M83528/013X0344.500114.303.00076.202.85072.391.35034.29.2666.76.027.69.3137.95
M83528/013X0353.84497.642.34459.542.85072.391.35034.29.172
.188		4.37
4.78		.027.69.1253.18
M83528/013X0383.75095.255.440138.181.71043.433.41086.61.264
.250		6.71
6.35		.027.69.2506.35
M83528/013X0393.75095.255.438138.131.71043.433.41086.61.2666.76.027.69.2506.35
M83528/013X040 54.188106.386.344161.142.16054.864.310109.47.266
.281		6.76
7.14		.027.69.2506.35
M83528/013X0416.344161.144.188106.384.310109.472.16054.86.2666.76.027.69.2506.35
M83528/013X0425.438138.138.688220.683.26082.806.510165.35.250
.328		6.35
8.33		.027.69.2506.35

Round EMI Waveguide Gaskets

SSP also supplies round EMI waveguide gaskets in M83528 sizes.

 

MIL-DTL-83528
Part Number

Dimensions (Configuration B)

A
± .015 (0.38)

B
± .015 (0.38) -.000 (.00)

C
± .015 (0.38) -.000 (.00)

D
± .010 (.25)

T
± .005 (.13)

M83528/013X019

3.125

79.38

.632

16.05

1.382

35.10

.234

5.94

.027

.69

M83528/013X026

3.625

92.08

.882

22.40

1.882

47.80

.234

5.94

.027

.69

M83528/013X033

5.312

134.92

1.350

34.29

2.850

72.39

.290

7.37

.027

.69

Rectangular Waveguide - Fixture
Rectangular Waveguide - White Background
Rectangular Waveguide - Wood Background