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Silicone O-Rings

Common Names:  Silicone, VQM, PVMQ

Trade Name:  Silastic®, Elastosil®, Thermoflex®

General Description:

The term silicone covers a large group of materials in which vinyl-methyl-silicone (VMQ) is often the central ingredient. Silicones are excellent seal materials for extreme temperature in static applications. Outstanding flex and fatigue life, very good for ozone and UV radiation, insulating properties, and physiologically neutral.  Silicones can be synthesized with a wide variety of properties and compositions.

Features: 

 Limitations:

Service Temperature:

Popular Silicone O-Ring Materials

* many other color and durometer options available

Marco CPD# Base Material Color Duro (Shore A) Relative Price Typical Inventory Level High Temp (F) Low Temp (F) Steam < 300 F Steam < 400 F Compression Set Chemical & Solvents Sunliight, Ozone, UV Wear Abrasion Permeation Vacuum Petroleum Oils & Hydraulics Fuels & Gas Brake Fluids
1 = Great    2 = Good    3 = Fair    4 = Poor
S1000  Silicone (VMQ)  Orange  70  $$$ Very High 400  -75 3
General purpose and FDA compliant Silicone per 21 CFR 177.2600   (available in nearly any color and durometer)
S1004  Silicone (VMQ)  Orange  40  $$$$ Low 400  -75 3
General purpose softer than standard Silicone to seal rough or warped glands and or low closure force applications
S1015 Silicone (VMQ)  Orange  70 $$$$ Low 600 -65 3
Higher temperature resistant Silicone
S1043 Silicone (VMQ)  Orange  50 $$$$ Low 400  -103 3
Lower temperature resistant Silicone
S1020  Silicone (VMQ)  Clear  70  $$$$ Low 400  -65  3
Clear-Translucent and FDA compliant Silicone per 21 CFR 177.2600
S1146 Silicone (VMQ)  White 70 $$$$ Low 480 -75 3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1083 Silicone (VMQ)  Clear  70 $$$$ Low 400  -65  3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
S1037 Silicone (VMQ)  Clear  70 $$$$$ Low 400  -65  3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Clean Room Manufactured
S1081  Silicone (VMQ)  Orange  65  $$$$$+ Low 350  -65  3
EMI RFI Shielding Nickel Coated Graphite filled Silicone, Volume Resistivity 0.10 ohm-cm

  

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