Parker's  70 Durometer,  Rust Silicone Mil/Aero (S1224-70 ZZ-R) (VMQ), S1224-70, has good ozone and weather resistance as well as good insulating and physiologically neutral properties. However, silicone elastomers as a group, have relatively low tensile strength, poor tear strength and little wear resistance.

Temperature Range: -65°F to 450°F (-54°C to 232°C)

Certifications include:
•  A-A-59588 2a 2b GR 70 (ZZ-R-765)
•  AMS 3304
•  AMS 3357
•  MIL-G-21569

Chemical resistance includes
• Animal and vegetable oil and grease
• High molecular weight chlorinated aromatic hydrocarbons (including flame-resistant insulators, and coolant for transformers)
• Moderate water resistance
• Diluted salt solutions
• Ozone, aging and weather

Not compatible with:
• Hot water / steam over 60°C (140°F)
• Acids and alkalis
• Low molecular weight chlorinated hydrocarbons (trichloroethylene)
• Hydrocarbon based fuels
• Aromatic hydrocarbons (benzene, toluene)
• Low molecular weight silicone oils

*Custom sizes and coatings/markings are available upon request. Contact Parker O-Ring Division at 859-269-2351 for design and pricing assistance.