Silicone O-Rings

Common Names: 

Silicone, VMQ, PVMQ

Trade Names:

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.

Popular Compounds:

Hundreds more specialty compounds available. Contact a Marco Sales Consultant or Engineer for more information.

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
DatasheetS1000 
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)
DatasheetS1004 
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
DatasheetS1015
Silicone (VMQ)  Orange  70 Low 500 -65 3
Higher temperature resistant Silicone
DatasheetS1043
Silicone (VMQ)  Orange  50 Low 400  -103 3
Lower temperature resistant Silicone
DatasheetS1020 
Silicone (VMQ)  Clear  70  Low 400  -65  3
Clear-Translucent and FDA compliant Silicone per 21 CFR 177.2600
DatasheetS1146
Silicone (VMQ)  White 70 Low 480 -75 3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
DatasheetS1083
Silicone (VMQ)  Clear  70 Low 400  -65  3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Commercial Manufactured
DatasheetS1037
Silicone (VMQ)  Clear  70 Low 400  -65  3
Medical Grade USP Class VI and FDA compliant Silicone, Platinium Cured, Clean Room Manufactured
DatasheetS1081 
Silicone (VMQ)  Orange  65  Low 350  -65  3
EMI RFI Shielding Nickel Coated Graphite filled Silicone, Volume Resistivity 0.10 ohm-cm

Service Temperature Range:

The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The most practical way of determining an end-use temperature range is testing in the actual application conditions. Consult a Marco Engineer for more details.

Features: 

 Limitations:

  

Back to the O-Ring Page

New Customer Hotline: 800-775-6525

Existing Customer Specialist: 603-468-3600 or repeat customers

Marco Rubber & Plastics
PO Box 1150
Seabrook, NH 03874

Contact
Home