Low Temperature O-Rings & Seals

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Rocket Seals distributes low temperature O-rings and seals from a variety of reputable manufacturers. Using an improper O-ring or seal in a low temperature environment can lead to disaster, we will work with you to find the correct component for your application.

Low temperature cooling causes O-rings and seals to lose their elasticity which is a necessary part of any O-ring and seal performance. At certain temperature points, O-rings will become hard and brittle. This loss of elasticity also means a reduced ability to respond to reaction force. Ultimately, loss of elasticity leads to seal leakage and ultimate O-ring failure.

The correct material selection is critical for the low temperature seal performance. Rocket Seals will help you find the material that will keep elastomer flexibility, respond to a reaction force, and provide moderate resistance to chemical exposure.

Benefits & Characteristics of Low Temperature O-Rings &Seals

Low temperature O-rings and seals should withstand temperatures ranging from -40°F to 100°F. We offer low temperature O-rings and seals made in a variety of materials. These include: HNBR, FFKM, Silicone, EPDM, PTFE and Kalrez®.


-50°C to 150°C

Hydrogenated Nitrile (HNBR) is a synthetic polymer that is obtained by saturating the double bonds of nitrile’s butadiene segments with hydrogen. It is known for its physical strength and resistance to heat, oil and chemicals.


-45°C to 240°C

Perfluoroelastomer (FFKM) is a synthetic rubber with higher amounts of fluorine than the standard FKM. This higher fluorine concentration gives FFKM the great high temperature and chemical resistance you’re looking for. Perfluoroelastomer contains higher amounts of fluorine than standard FKM and features high temperature ratings up to 325°C. FFKM also has improved chemical resistance over FKM with nearly universal chemical compatibility. This combination of high-performance capabilities makes FFKM seals the best choice for challenging applications.


-55°C to 200°C

Silicone includes a large group of materials in which vinyl-methyl-silicone (VMQ) is often the central ingredient. Silicones are excellent seal materials for extreme low temperature in static applications. Silicone is also specified for applications involving ozone and UV radiation.


EPDM (Ethylene Propylene Diene Monomers) is a high-density synthetic rubber that is extremely versatile with an ability to withstand high temperatures. It resists weathering, acids and alkalis.


-45° to 110°C

Nitrile is an organic compound that produces low cost O-rings and seals. They have moderate oil, chemical and grease resistance.


-200°C to 250°C

PTFE is also known as Teflon®. Discovered in 1938, Teflon® is a hard plastic that must be laid in place because it is not stretchable. PTFE maintains strength and toughness at low temperatures and has excellent chemical resistance.


-42°C to 220°C

Kalrez® is a DuPont trademark. It is resistant to over 1,800 different harsh chemicals while offering the high temperature stability of Teflon®.

Low temperature is only one factor when choosing a material, mechanical properties, pressure capability, industry standards and chemical resistance are other factors to consider when choosing the correct low temperature O-ring or seal material. Rocket Seals can walk you through the benefits of each of the different materials listed above.

Low Temperature O-Ring & Seals Specs

With so many low temperature materials to choose from, lean on Rocket Seals to help you find the correct O-ring or seal for your application. Low temperature O-rings and seals are indicated for the following applications.

  • Aerospace
  • Pharmaceutical
  • Medical
  • Oil & gas
  • Food
  • Dairy
  • Petrochemical

O-ring Specs & Certifications

  • AS568 (2-XXX, 3-XXX, 5XXX Sizes)
  • FDA and USP Class VI
  • Mil, AMS and NAS Spec
  • NSF 51, NSF 61 and UL Listed

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