O-ring

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While choosing an O-ring for your application, a lot of emphasis should be put on the material of the seal being employed. Some of the common materials employed in making O-rings include: nitrile rubber or Buna-N, Viton(r), silicone rubber, neoprene, and PTFE or Teflon(r). It is a circular piece of rubber which fits around the piston to help maintain the seal between the piston and cartridge wall. It is a static and/or dynamic seal for curved or circular mating surfaces.

Selecting an O-ring material is based on different factors, but two of the most crucial factors are the operating temperature that O-rings will be subjected to and the array of the chemicals they will come in contact with. Other factors that need to be taken into consideration include: resistance to tearing and abrasion, and sunlight or aging. As most O-ring materials respond differently to different environment and chemicals, each material used for making O-Ring has their own pluses and minuses.

Nitrile Rubber:

Nitrile Rubber is ...
... commonly used in the making of O-rings or Buna-N. The material is said to have exceptional resistance to water, hydraulic fluids, solvents, oils and other petroleum products. And with its functioning temperature range between -65 degrees F to +275 degrees F, has made nitrile rubber one of the most commonly used elastomers to produce O-rings. Nonetheless, nitrile is not good when exposed to sunlight and ozone. Furthermore, its vulnerability to ozone makes it imperative that nitrile rubber seals are not stored near the electric motors that are known to produce ozone. Further, Nitrile rubber O-rings are highly preferred in the automobile industry given that it has high resistance to petroleum products and temperature.

Silicone Rubber:

Silicone rubbers are produced from silicon, hydrogen, oxygen, and carbon and is considered unsuitable for dynamic sealing applications. However, their outstanding resistances to extreme temperatures make it ideal for applications where seals are exposed to high dry heats, as in automotive components and cookware.

Viton(r):

Viton(r) is also used for producing O-ring seals. Its remarkable resistance to solvents and oils, make it popular in a number of applications. Seals made from this material can resist temperatures as much as +600 degrees F. Little wonder, Viton O-rings are used in SCUBA diving, where the O-ring seals are used in the diver's air tank.

O-Rings are also made from PTFE, Neoprene, and Natural Rubber

Demand of O-Rings in the international markets

United States, China (Mainland), India, Syrian Arab Republic, Australia, Canada, Germany, Hong Kong, Iran, Japan, Pakistan

Prominent Places to source O-Rings from India

Mumbai, Delhi, Ahmedabad, Chennai, New Delhi, Pune, Gurgaon, Bangalore, Faridabad, Kolkata, Vadodara, Hyderabad, Thane, Coimbatore, Howrah, Rajkot, Secunderabad, Ludhiana, Ghaziabad, Jalandhar, Ballabgarh, Vasai, Madurai, Kanpur, Nashik, Noida, Hosur, Indore, Jaipur, Ambala Cantt, Bahadurgarh, Belgaum, Mohali, Chandigarh, Meerut, Surat, Agra, Aurangabad, Bhiwadi, Mehsana, Nagpur, Navi Mumbai, Vapi, Anand, Jodhpur, Kottayam, Sonepat, Vijayawada, Visakhapatnam, Ahmednagar
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