ORING SILICONE METRIC

DESCRIPTION

O-rings are the most common and cost-effective sealing elements available. They seal over a wide range of pressure, temperature and tolerance. They are an excellent option where space limitations are a concern. And with proper hardware design, o-rings can seal a wide range of pressures from low vacuum up to several thousand PSI. O-rings are available in a wide range of elastomers as well as PTFE. 

Silicone Rubber (Q, MQ, VMQ, PVMQ): Silicones have good ozone and weather resistance as well as good insulating and physiologically neutral properties. Many grades of silicone are food-grade and FDA-compliant, so they are widely used in the food, cosmetic, medical and pharmaceutical industries. However, silicone elastomers as a group have relatively low tensile strength, poor tear strength and little wear resistance. 

A limited number of metric sizes are readily available in 70 durometer. Please contact H&D for sizes not listed. 

SEAL INFORMATION

Low Temperature Range (F): DOWN TO -54F (SPECIAL COMPOUNDS DOWN TO -175F) 

High Temperature Range (F): UP TO 400F (SPECIAL COMPOUNDS UP TO 500F) 

Chemical Resistance:

•  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:

•  SUPERHEATED WATER AND STEAM OVER 250F.
•  ACIDS AND ALKALIS.
•  LOW MOLECULAR WEIGHT CHLORINATED HYDROCARBONS (TRICHLOROETHYLENE).

Durometer (Shore A): 70 

Max Pressure (psi): 1,450 DEPENDING ON APPLICATION 

Max Pressure (psi) WITH BACKUP RINGS: 5,000 DEPENDING ON APPLICATION 

Max Speed (ft/sec): 1.5 

Mating Surface Roughness - Ra (µm) - DYNAMIC: 0.4 MAX 

Mating Surface Roughness - Ra (µm) - STATIC: 0.8 MAX 

Part Number Definition (Metric): (CS)X(ID)SI70 

Additional Part Number Definition (Metric): 10MM ID X 2MM CS = 2X10SI70