AMS3338 Silicone

AMS3338 Silicone

AMS3338 silicone meets a SAE International Aerospace Material Specification (AMS) standard for an extreme-low-temperature resistant silicone rubber (PVMQ) for applications requiring high performance in harsh, cold environments. This material is used in military and aerospace applications.

Contact ElastaPro for AMS3338 silicone.

AMS3338 Silicone Properties

Key characteristics of AMS 3338 silicone:

• Material: Silicone rubber (specifically PVMQ, or poly(vinyl methyl siloxane)).
• Property: Extreme low-temperature resistance.
• Application: Aerospace and defense industries, where materials must perform reliably in extreme conditions.
• Purpose: Used for seals, electrical insulation, and other components in aircraft, weapon systems, and communications equipment.

FAQs for AMS 3338 Silicone

What is AMS 3338 silicone used for in aerospace applications

AMS 3338 is a high‑temperature, high‑strength solid silicone designed for demanding aerospace sealing applications. Engineers specify it for engine‑bay gaskets, ECS components, high‑load seals, and thermal insulation pads where elevated temperatures and mechanical stress are present.

How does AMS 3338 differ from AMS 330X silicone grades

AMS 3338 is engineered for higher temperature resistance and improved mechanical durability compared to AMS 3302, AMS 3303, AMS 3304, and AMS 3305. While the AMS 330X family covers general‑purpose solid silicone sheets in various durometers, AMS 3338 provides enhanced tensile strength, tear resistance, and long‑term compression‑set performance for more extreme aerospace environments.

What temperature range does AMS 3338 silicone support

AMS 3338 typically operates from –65°F to +500°F (–54°C to +260°C) depending on formulation. This extended upper‑temperature capability makes it suitable for engine‑adjacent components, thermal barriers, and high‑heat structural seals where standard AMS 330X silicones may degrade.

Is AMS 3338 silicone compatible with aviation fuels or hydraulic fluids

No. Like most silicone elastomers, AMS 3338 is not fuel‑resistant and should not be used in contact with Jet‑A, JP‑8, Skydrol, or petroleum‑based fluids. For fuel‑system or hydraulic‑system exposure, engineers should specify fluorosilicone (e.g., AMS-R‑25988 or AMS 3325, AMS 3326, AMS 3327).

Can AMS 3338 silicone be fabricated into custom aerospace gaskets

Yes. AMS 3338 is supplied as solid sheet or molded stock and can be converted into custom gaskets using waterjet cutting, die cutting, slitting, bonding, or molding. Its high‑temperature stability and mechanical strength make it ideal for precision aerospace seals requiring long‑term reliability under thermal cycling and vibration.

ElastaPro makes AMS silicone at our AS9100D certified, Made in USA manufacturing facility. Contact us for a quote.