Silicone O-Rings Manufacturer

Helix Engineering is a world class manufacturer of Silicon Rubber O-Rings in American Standard AS568, British Standard, Metric sizes and in any Custom size upto 2000 mm in Diameter and in Shore Hardness Range A 10-80

Helix Engineering also manufactures Transparent Silicone O-Rings , Food Grade Silicone O-Rings and FDA Approved Silicone O-Rings

Helix Engineering Manufactures Silicone O-Rings in all colours including Red, Black, Blue, Green, Yellow, Brown Etc and in any custom colour as per Customer’s Requirements

Helix Engineering also manufactures Silicone V-Ring and Silicon X-Ring

A ring-shaped, molded elastomer with a circular cross-section is what an O-ring is. Depending on the application, they may be built with unique cross-sections such as T-shapes, L-shapes, and so on.

Silicone is a type of elastomer composed of polymers derived from quartz that contains silicon, oxygen, hydrogen, and carbon. Methyl, phenyl, and vinyl are used in the manufacturing of silicone O-rings.

Properties of Silicone Rubber

Silicone is used in many applications where organic rubber cannot perform due to its excellent range of working properties.

  • Excellent heat resistance
  • Excellent compression set resistance
  • UV and ozone stability
  • Excellent resistance to oxidation
  • Excellent water tightness
  • Soft grades are also available (10, 20, 30 durometer Shore A)
  • Abrasion resistance is poor.
  • Chemical resistance is moderate to poor.

Specifications of Silicone O-Rings

Temperature Range

The temperature range of silicone O-rings is -60°C to 225°C. Temperatures can range from -100° to 300°C in some varieties.

General Suitability

Silicon is non-toxic and dermatologically compatible due to which it is most suitable for use in medical device and equipment assemblies.

Silicon O-rings are not suitable for dynamic applications due to their low strength, poor abrasion resistance, and high gas permeability.

Preferred Environment of Usage

Silicon O-rings are mainly preferred for use under high working temperatures due to their excellent heat-resistant properties. On being treated with chemicals they can also become flame resistant.

Environmental Properties

It is not recommended for use in concentrated solvents, oils, concentrated acids, diluted sodium hydroxide, hydrocarbon-based fuels, and aromatic mineral oil. Aromatic hydrocarbons (benzene, toluene), aromatic mineral oil, acids, alkalis, superheated water, or steam above 250 degrees Fahrenheit also have a degrading effect on silicon O-rings.

Applications of Silicon O-rings

Silicone O-rings are available in FDA-approved and medical-grade varieties. Silicone has become an important material for medical seals and devices due to its non-toxic biocompatibility. Microminiature silicone O-rings are becoming increasingly popular as medical technology becomes smaller and more compact.

Silicone O-rings are used in a wide range of other applications, including water-resistant camera housings, enclosures, automobiles, and many others.


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