Aerospace Silicones and Military Silicones

Specialty Silicone Products (SSP) makes military and aerospace silicones that meet AMS, A-A-59588, and MIL-DTL-25988  requirements. We also fabricate aerospace gaskets and O-rings. 

Our full line of military and aerospace silicones includes space-grade materials for extremely low temperatures and with low levels of outgassing.

SSP's Aircraft Silicones and Aviation Silicones: Spec Grade, Made in USA, Full Traceability

SSP makes military and aerospace silicones and fluorosilicones that are fully tested to and meet the full requirements of AMS, A-A-59588, and MIL-DL-25988 requirements. 

We also supply MIL-DTL-83528 silicones and fluorosilicones for EMI shielding, including flame-resistant materials. Our full line of aerospace silicones and military silicones includes space-grade materials for extremely low temperatures and low levels of outgassing. 

For traceability, we offer a full Certificate of Analysis (COA) with every batch. 

AMS Aerospace Silicones

SSP’s AMS grade silicones meet Aerospace Material Specifications (AMS) from SAE International. These elastomers come in a range of durometers and are tested to AMS 3301, 3302, 3345, 3356E, 3325, 3305J, 3303, or 3304 requirements. AMS silicones are used in helicopter bellows, flexible molded sleeves that keep out dust, oil exhaust fumes, and debris. AMS silicone applications also include rotor blade seals, silicone parts that need to withstand exposure to harsh outdoor weather conditions.  

A-A-59588 Aerospace Silicones

Specialty Silicone Products also makes military and aerospace silicones that meet specific requirements within AA59588, a U.S. General Service Administration (GSA) specification that contains six alphanumeric classes with durometer-based grades. Whether you need Class 1A or Class 1B elastomers for low temperatures, Class 2A or 2B materials for high temperatures and many other favorable properties of high-strength silicone, or 3A and 3B silicones for flex fatigue resistance, SSP has what you need. This includes three 3B certified silicones in 50, 60, and 70 durometer.

MIL-DTL-25988 Military Fluorosilicones

SSP’s MIL-DTL-25988 fluorosilicones are used in fuel seals and fuel tank seals because these elastomers resist petroleum-based products over a wide temperature range, including temperatures as low as -100° C. Product offerings include Type 1 and Type 2 materials that meet Class 1 and Class 2 requirements in various durometer-based grades.   Like AMS and AA59588 silicones, the most popular colors for SSP’s MIL-DTL-25988 fluorosilicones are red, blue, and black. 

MIL-DTL-83528 EMI Shielding Silicones

SSP’s MIL-DTL-83528 QPL certified EMI shielding silicones meet the requirements of MIL-DTL-83528, a U.S. military specification for electrically conductive elastomeric shielding gaskets. They’re also part of the M83528 Qualified Product List (QPL) from the Defense Logistic Agency (DLA). Our MIL-DTL-83528 Type A, B, C, D, and K elastomers provide offsets to Parker Chomerics CHO-SEAL® materials.

In addition, we make space-grade silicones for applications that include military and civilian satellites and ground stations. 

Applications for Aerospace Silicones

Aerospace silicones combine high temperature resistance with flexibility, durability, chemical inertness, and excellent sealing capabilities. SSP’s materials are supplied as ready-to-mold compounds and compression-molded sheets. Applications include reinforced silicone seals for aircraft engines and fan blades and aircraft doors and hatches that require resistance to a wide temperature range.

Aerospace silicones are a broad category of materials, and their applications can be categorized as follows.

Sealing and Bonding

  • Fuel Tank Seals: Fluorosilicone seals are used with fuel tanks to prevent leaks and resist exposure to harsh chemicals.
  • Doors and Windows: Airtight silicone seals are used with cabin windows, doors, and hatches.
  • Weatherproofing: Aerospace seals are also used protect aircraft against environmental factors such as rain, wind, and UV exposure.

Thermal and Electrical Insulation

  • Wire and Cable Coatings: Insulation for electrical wiring and cabling in high-temperature or extreme environments.
  • Thermal Barriers: Used in heat shields, engine components, and other areas exposed to high temperatures.
  • Radar and Antenna Systems: Silicone serves as an insulating layer in electronic components.

Vibration Damping and Shock Absorption

  • Mounts and Gaskets: Silicone materials reduce vibration and absorb shocks in avionics, engines, and other systems to enhance performance and durability.
  • Acoustic Insulation: Helps dampen sound in aircraft cabins for improved passenger comfort.

Coatings and Protection

  • Corrosion Protection: Silicone coatings prevent corrosion of metallic surfaces exposed to moisture and extreme conditions.
  • Abrasion Resistance: Used to protect surfaces from wear and tear, especially in moving parts.
  • Anti-Icing Applications: Prevents the formation of ice on wings, sensors, and other aircraft surfaces.

Flexible Hoses and Tubing

  • Fluid Transfer Systems: Silicone tubing is used to transport hydraulic fluids, fuel, and air because of its flexibility and chemical resistance.
  • Pneumatic Systems: Ensures efficient airflow in critical aerospace systems.

Thermal and Fire Resistance

  • Fire Barriers: Silicone materials are used as fire-resistant seals in aircraft interiors and engine compartments.
  • High-Temperature Applications: Silicone parts maintain integrity under extreme heat, such as in jet engines.

Aerospace Adhesives

  • Structural Bonding: Silicone adhesives bond lightweight composites and metal parts while withstanding mechanical stress and thermal cycling.
  • Panel Assembly: Used to bond panels in aircraft interiors and exteriors.

Human Safety and Comfort

  • Oxygen Masks and Life Support Systems: Silicone is biocompatible and used in components that come into contact with humans.
  • Seating and Cushioning: Provides padding and comfort in aircraft seats and other touchpoints.

Space Applications

  • Satellite Components: Silicones are used in electronics, solar panels, and structural components of satellites.
  • Rocket Insulation: Protects components from extreme heat and cold during space travel.

Additional Resources for Aircraft and Aviation Silicones