Specification Grade Silicones

AMS3302 Silicone

AMS3302 silicone meets an SAE International Aerospace Material Specification (AMS) for a general-purpose, heat- and weather-resistant solid silicone rubber with a 50 durometer (Shore A hardness). This material is designed for military and aerospace applications requiring temperature resistance between -65°F and +401°F (-54°C to +205°C). It also provides resistance to weathering and petroleum-based oils.

Contact ElastaPro for AMS 3302 silicone.

AMS3302 Silicone Properties

Key characteristics of AMS3302 silicone:

  • Material: Solid silicone rubber, 100% virgin silicone (MQ/VMQ) elastomer.
  • Hardness: 50 durometer (±5 durometer), Shore A.
  • Temperature Range: Suitable for use from -65°F to +401°F (-54°C to +205°C).
  • Resistance: Good resistance to weathering, ozone, sunlight, oxidation, and petroleum-based lubricating oils.
  • Limitations: Not recommended for contact with gasoline, aromatic fuels, or other low-aniline-point fluids due to excessive swelling.

FAQs for AMS 3302 Silicone

What is AMS 3302 silicone used for in aerospace applications

AMS 3302 is a medium‑soft (40–50 Shore A) solid silicone used for general‑purpose aerospace gasketing. Engineers specify it for door and panel seals, avionics enclosures, ECS interfaces, and vibration‑damping components where a balance of flexibility and mechanical strength is required.

How does AMS 3302 differ from AMS 3301, 3303, and 3304

AMS 3302 sits between the softest and medium grades in the AMS 330X family.

  • AMS 3301 → soft (30–40A)
  • AMS 3302 → medium‑soft (40–50A)
  • AMS 3303 → medium (50–60A)
  • AMS 3304 → firm (60–70A)

This makes AMS 3302 a versatile choice for seals that must conform to mating surfaces without excessive compression or deformation.

What temperature range does AMS 3302 silicone support

AMS 3302 typically operates from –65°F to +400°F (–54°C to +204°C). It maintains elasticity at low temperatures and resists thermal degradation at elevated temperatures, making it suitable for both interior and exterior aircraft environments.

Is AMS 3302 silicone compatible with aviation fuels or hydraulic fluids

No. AMS 3302 silicone is not fuel‑resistant and should not be used in areas exposed to Jet‑A, JP‑8, Skydrol, or petroleum‑based fluids. For fuel‑system or hydraulic‑system exposure, engineers should specify fluorosilicone (AMS‑R‑25988 or AMS 3325, AMS 3326, AMS3327).

Can AMS 3302 silicone be fabricated into custom aerospace gaskets

Yes. AMS 3302 silicone is supplied as solid silicone sheet or uncured silicone compound and can be converted into custom gaskets using waterjet cutting, die cutting, splicing, bonding, or molding. Its medium‑soft durometer makes it ideal for general‑purpose aerospace seals requiring reliable compression and long‑term durability.

ElastaPro makes AMS silicone at our AS9100D, Made in USA manufacturing facility. Contact us for more information.