Nov, 13 2021

Military and Aerospace Fluorosilicones and EMI Gasketing Available



Military and Aerospace Fluorosilicones and EMI Gasketing Available

At a time when many suppliers are reporting long lead times and out-of-stock materials, it’s good to know you can still get what you need. Specialty Silicone Products (SSP) is ready to supply you with the following types of materials for military, aerospace, and other demanding applications.

  • MIL-DTL-25988 fluorosilicones
  • MIL-DTL-83528 EMI gasket materials
  • Offsets to discontinued GORE® EMI gasketing, including silicones with UL 94 V-0 flame resistance

At our Ballston Spa, New York (USA) facility, we’re ready to take your order for sheets, continuous rolls, extrusions (MIL-DTL-83258 and EMI only), and ready-to-mold compounds. In addition to fully-compliant materials, you’ll get the benefits of shorter lead times and lower minimum order quantities.

Fully-Compliant Materials

When you buy silicones and fluorosilicones from SSP, you know that what you’re getting meets all of the requirements for the standard you need to meet. For all of our military and aerospace materials, we offer certificates of analysis (COAs) that report batch-level test results. We also offer certificates of compliance (COCs) that attest to a batch’s compliance. With other suppliers, changes to ingredients mean that you could be assuming a level of compliance that doesn’t really exist.   

MIL-DTL-25988 Fluorosilicones

MIL-DTL-25988 is a U.S. military detail specification (DTL) that covers the use of fluorosilicone rubber when resistance to jet fuel and lubricating oil is required. The current version of this standard, Revision D, was issued on January 21, 2021, and contains numbered Types, Classes, and Grades. SSP makes fluorosilicones that meet Rev. D and is ready to send them to you in cost-effective quantities.

This sample COA is for an SSP fluorosilicone that meets MIL-DTL-25988(D) Type 2, Class 1, Grade 40 requirements.

Note: Click the image to view a larger version of the COA as a PDF.

Table

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This table below lists readily available MIL-DTL-25988 fluorosilicones and their types, classes, and grades.

SSP Material

Type 2

Class

Grade

SSP-267

2

1

40

SSP-338

2

1 and 2

50

SSP-083

2

2

60

SSP-100

2

1 and 2

70

SSP-372

2

2

 80


MIL-DTL-83528 EMI Shielding Silicones

MIL-DTL-83528 is a U.S. military detail specification (DTL) that covers the use of electrically-conductive gasketing materials that provide defined levels of shielding against electromagnetic interference (EMI) and radio frequency interference (RFI). The lettered sections of this military specification describe silicone and fluorosilicone elastomers that are filled with metal or metal-coated particles. 

SSP offers a broad portfolio of EMI shielding materials and is ready to take your order for Type A, B, D, or K MIL-DTL-83528 materials. Several of our materials belong to the MIL-DTL-83528 Qualified Products List (QPL) from the Defense Logistics Agency (DLA). There are also SSP shielding silicones that you can use instead of CHO-SEAL® products from Parker Chomerics.   

SSP Material

Type 

Base Elastomer

Fill Material

QPL

Offsets

SSP-2368

B

Silicone

Silver-Aluminum

Yes

CHO-SEAL 1285

SSP-2486

D

Fluorosilicone

Silver-Aluminum

Yes

CHO-SEAL 1287/1298

SSP-2569

A

Silicone

Silver-Copper

Yes

CHO-SEAL 1215

SSP-2571

K

Silicone

Silver-Copper

Yes

CHO-SEAL 1212


SSP Offsets to Discontinued GORE® EMI Shielding Materials 

SSP is also ready to send you offsets to GORE® EMI gasketing materials that have been discontinued. SSP’s products use silicone or fluorosilicone as the base material instead of PTFE or cellular PTFE. Our products are not exact offsets since the base materials are different, but SSP’s materials have been proven to work in hundreds of replacement situations over the last two years.

  • The silicones have third-party data for EMI shielding, ASTM595 outgassing, and UL 94 V-0 flame resistance. 
  • The fluorosilicone is not UL 94 V-0 compliant but has third-party data for shielding and outgassing.  

The table below describes available SSP products.  

SSP Material

Durometer

Base Elastomer

Fill Material

UL 94 V-0

Offsets

SSP-502-40-V0

40

Silicone

Nickel-Graphite

Yes

GORE® GS2100

SSP-502-60-V0

60

Silicone

Nickel-Graphite

Yes

GORE® GS5200

SSP-550-45

45

Fluorosilicone

Silver-Aluminum

No

GORE® GS2100


Request a Quote and Place Your Order

During this time of supply chain constraints, SSP can send you MIL-DTL-25988 fluorosilicones, MIL-DTL-83528 EMI gasket materials, and offsets to discontinued GORE® EMI gasketing – including shielding silicones with UL 94 V-0 flame resistance. To request a quote or place an order, contact SSP on-line or email Dominic Testo, SSP’s Business Development Manager.