Silicone O-Rings (VMQ) Duro 70 FDA Compliant, 3-A Certified:
AMS 3304, ZZ-R-765 Class 2a & 2b - Gr 70
The term silicone covers a large group of materials in which vinyl-methyl-silicone (VMQ) is often the central ingredient. Silicone elastomers as a group have relatively low tensile strength, poor tear and wear resistance. However, they have many useful properties as well. Silicone has a good heat resistance, good cold flexibility, and good ozone and weather resistance as well as good insulating and physiologically neutral properties.
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