Sponge, Fluorosilicone (FVM) Rubber Closed Cell
Rubber: Silicone [VMQ] Non-Oil Resistant Low Compression Set, 65 - 75 Type A Hardness
Rubber: Ethylene Propylene (EP) Phosphate Ester Resistant Low Temperature -75 °F (-59 °C), 75 to 85 Type M Hardness For Seals in Hydraulic Systems
Rubber, Ethylene-Propylene, Hydrazine Resistant
Required O-ring Sizes for Quality Conformance Testing
(R) Elastomer: Silicone Rubber, (MQ/VMQ) Flame Retardant, Low Smoke Density, Low Smoke Toxicity, 50 - 60 Durometer Type A Hardness For products in Pressurized Aircraft Compartment I
Rubber: Vinyl-Methyl Silicone (VMQ) Hot Air Resistant Low Compression Set, 70 to 80 Type A Hardness for Seals in Hot Air Systems
Fluorosilicone (FVMQ) Rubber Fuel and Oil Resistant 35 – 45
Test Slabs, Chloroprene (CR), 70 - 80
Elastomer: Rubber, Silicone (VMQ) Non-Oil-Resistant Low Compression Set 65 - 75 Shore A Hardness
Elastomer: Methyl Phenyl Vinyl Silicone Rubber (PVMQ) Extreme Low-Temperature Resistant 15 - 30 Type A Hardness
Elastomer: Silicone Rubber (VMQ) Aircraft Piston Engine Oil Resistant Compression Set Resistant 65 - 75 Type A Hardness
Silicone Rubber, Fiberglass Fabric Reinforced
Designing with Elastomers for use at Low Temperatures, Near or Below Glass Transition
To ensure success in design of elastomeric parts for use at low temperature, the design engineer must understand the peculiar properties of rubber materials at these temperatures.
There are no static applications of rubber. The Gaussian theory of rubber elasticity demonstrates that the elastic characteristic of rubber is due to approximately 15% internal energy and the balance, 85%, is entropy change. In other words, when an elastomer is deformed, the elastomer chain network is forced to rearrange its configuration thereby storing energy through entropy change. Thermodynamically, this means that rubber elasticity is time and temperature dependent (Reference 25).
The purpose of this report is to provide guidance on low temperature properties of rubber with the terminology, test methods, and mathematical models applicable to rubber, and to present some practical experience.