Silicone o-rings are excellent seal materials for static, high temperature applications. Featuring outstanding flex and fatigue life, ozone and UV radiation resistance, physiologically neutral and insulating properties, silicone o-rings are effective in a wide range of applications. Find the silicon o-ring compound property that's perfect for you in the chart below, then easily order online from the world's largest silicone o-ring inventory network.

Silicone O-Ring Temperature and Resistance Chart

Service Temperature Range
Low Temp. Range, °F Abbv. High Temp. Range, °F Compr. Set Oils Steam Weather/
Fuels Acids/
Bases Abrasion Wear Permeation
temperature range rating b rating c rating b rating a rating b rating c rating b rating c rating c
temperature range chart
  • Excellent
  • Moderate
  • Poor
  • Specialty Compounds Only


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Popular Allorings Compounds
Compound Relative
Low Temp ° F High Temp ° F Durometer Color Special
View Datasheet Relative Price: 2 Relative Availability: 5 -75  400  70  Orange 
Food and beverage grade compound. FDA compliant. 
Relative Price: 3 Relative Availability: 2 -75  400  50  Orange 
Softer hardness to seal rough or warped glands and or low closure force applications. 
Relative Price: 4 Relative Availability: 1 -65  500  70  Orange 
Improved high temperature resistance compound. 
View Datasheet Relative Price: 6 Relative Availability: 2 -65  400  70  Clear-Translucent 
Ultra clean compound for use in medical and pharmaceutical applications. Manufactured and packaged in a clean room. 
Relative Price: 4 Relative Availability: 2 -100  400  50  Orange 
Improved low temperature resistance compound. 
Relative Price: 4 Relative Availability: 2 -65  400  70  Clear-Translucent 
Medical and pharmaceutical grade compound. NOT manufactured or packaged in a clean room. For clean room MFG, see S1037. 
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Common Silicone Names:

Silicone, VMQ, PVMQ

Trade Name:

Silastic®, Elastosil®, Thermoflex®


  • Can be compounded to meet FDA, USP Class VI, USDA, 3-A and Canada AG
  • Excellent heat and compression resistance, excellent flexibility, good electrical insulator
  • Excellent resistance to oxygen, ozone and sunlight, animal and vegetable oil and grease
  • Resistance to fungal and biological attack


  • Not recommended for dynamic application since it has low strength and poor abrasion resistance & high gas permeability
  • Concentrated solvents, oils, concentrated acids, diluted sodium hydroxide, hydrocarbon based fuels, aromatic mineral oil
  • Aromatic Hydrocarbons (benzene, toluene), aromatic mineral oil, acids and alkalis, Superheated water or steam over 250 F

Service Temperature:

  • -90 to 500° F (-68 to 260° C).  Depending on compound and application.