AMS3301 Silicone Sheeting & Uncured Compounds
AMS3301 silicone meets an SAE International Aerospace Material Specification (AMS) for a solid silicone rubber with a 40-durometer Shore A hardness. This material is used in aerospace and military applications.
Contact ElastaPro for AMS 3301 silicone.
AMS3301 Silicone Properties
Key characteristics of this silicone:
- Material Type: Solid Silicone Rubber (MQ/VMQ)
- Hardness: 40 durometer (35-45 range)
- Forms: Sheets, strips, tubing, extrusions, and molded shapes
- Temperature Range: -85°F to 400°F (-65°C to 204°C)
- Resistances: Weathering, petroleum-based lubricating oils
FAQs About AMS3301 Silicone
What is AMS 3301 silicone used for in aerospace applications?
AMS 3301 is a low‑durometer (30–40 Shore A) solid silicone used for flexible, low‑pressure sealing applications. Engineers specify it for grommets, boots, environmental seals, and access‑panel gaskets where conformability, cold‑temperature flexibility, and low compression force are required.
How does AMS 3301 differ from AMS 3302, 3303, and 3304?
AMS 3301 is the softest grade 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)
Its lower hardness makes AMS 3301 ideal for sealing uneven surfaces, reducing assembly loads, and maintaining sealing force under low clamping pressure.
What temperature range does AMS 3301 silicone support?
AMS 3301 typically operates from –65°F to +400°F (–54°C to +204°C). The material maintains flexibility at low temperatures and resists thermal degradation at elevated temperatures, making it suitable for nacelles, avionics bays, ECS interfaces, and exterior aircraft components.
Is AMS 3301 silicone compatible with aviation fuels or hydraulic fluids?
No. AMS 3301 silicone is not fuel‑resistant and should not be used in environments exposed to 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, AMS3326, or AMS3327).
Can AMS 3301 silicone be fabricated into custom aerospace gaskets?
Yes. AMS 3301 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 softness makes it ideal for continuous‑loop gaskets, vibration‑damping pads, and seals requiring low closure force.
ElastaPro makes AMS silicone at our AS9100D certified, Made in USA manufacturing facility. Contact us for more information.