Apr, 27 2016

Silicones That Meet Military and Aerospace Requirements



Silicones That Meet Military and Aerospace Requirements

Specialty Silicone Products (SSP) supplies M83528 gasket materials and a full line of silicones and fluorosilicones that meet military and aerospace requirements. Specifically, SSP provides compounds that are fully tested to MIL-DTL-25988C and A-A 59588 standards. Converters, gasket fabricators, and aerospace and defense contractors can also choose SSP compounds that meet SAE AMS 3326 requirements.

MIL-R-25988C Fluorosilicones

MIL-DTL-25988C is a U.S. military specification (MIL-SPEC) for fluorosilicones that resist oil and fuel. This MIL-SPEC divides compliant compounds into two classes: Type 1 for O-Rings, and Type 2 for molded parts, sheets, strips, and extruded shapes. Within each Type, there are different Classes. For example, Class 1 compounds are for general-purpose use. Class 2 materials are high-strength, general purpose elastomers.

This table describes MIL-DTL-25988C fluorosilicones. These products meet the requirements of MIL-R-25988C Type 2, Class 2. All fluorosilicones are peroxide-catalyzed, heat-cured, and supplied as ready-to-mold compounds or compression-molded sheet stock.

Elastomer

MIL-DTL-25988C Callouts

Product Specifications

Product No.

Type

Class

Grade

Durometer (Shore A)

Tensile Strength (psi)

Elongation (%)

Tear B (ppi/min)

SSP-267

2

2

40

40

1500

500

130

SSP-338

2

2

50

50

1300

500

225

SSP-083*

2

2

60

60

1000

350

150

SSP-100

2

2

70

70

1000

250

128

SSP-372

2

2

80

80

800

170

102

 

 

 

 

 

 

 

 

SSP-338A

2

2

50

50

1300

500

225

SSP-082

2

2

75

75

900

150

100

 * SSP-083 also meets SAE AMS 3326 requirements for fuel and oil resistant fluorosilicones.

A-A-59588 Silicones

SSP supplies heat-cured, peroxide-catalyzed silicones that meet the requirements of A-A 59588A, a General Services Administration (GSA) specification for commercial items. AA 59588A supersedes ZZ-R-765E and divides compliant compounds into different classes and grades. For example, Class 1A and Class 1B silicones resist low temperatures. Class 2A and Class 2B materials provide high temperature resistance.   

This table describes SSP’s A-A 59588 silicones. These materials are supplied as ready-to-mold compounds or compression-molded sheet stock.

Elastomer

A-A 59588 Callouts

Product Specifications

Product No.

Class

Grade

Durometer (Shore A)

Tensile Strength (psi)

Elongation (%)

SSP-278

1A, 1B

40

40

1000

500

SSP-227

1A, 1B

50

50

1300

500

SSP-122

1A, 1B

60

60

1100

500

SSP-266

1A, 1B

70

70

1100

450

 

 

 

 

 

 

SSP-390
Series

2A, 2B

25

10 – 80

870 – 1475  

700 – 1200

SSP-220

2A, 2B

40

40

N/A

N/A

SSP-301

2A, 2B

50

50

1100

450

SSP-352

2A, 2B

60

60

1000

300

SSP-389

2A, 2B

70

70

1000

250

SSP-391

2A, 2B

80

80

1200

150

Meet SSP at MFG4

Are you headed to the MFG4 tradeshow next week? From May 3 to 5, 2016, SSP will join other leading manufacturers that serve the defense and aerospace industries at the Connecticut Convention Center in Hartford. Dominic Testo, SSP Account Executive, will be on-hand to answer your questions about military silicones, aerospace silicones, and particle-filled elastomers for EMI shielding.

Meet Dominic at the SSP Booth (#1814), or contact SSP to request a meeting. Hope to see you there!