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Glossary » Design » Oring » Chemical » Stearic Acid

Common O-Ring materials that are SUITABLE for dynamic and static seal in the environment containing Stearic Acid include

  • Aflas: Aflas is the tradename for a unique fluoroelastomer based upon an alternating copolymer of tetrafluoroethylene and propylene ("TFE/P").
  • Buna-N (Nitrile): Buna-N, also known as Nitrile rubber, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.
  • Chemraz: Chemraz combines the resilience and sealing force of an elastomer with chemical resistance approaching that of PTFE.
  • Fluorocarbon: Fluorocarbon elastomer (FKM) material is also known by its tradename VITON or Fluorel.
  • Kalrez: Kalrez is the tradename for a perfluoroelastomeric material.
  • Millable Polyurethane: Millable Polyurethane rubber is made from both polyester and polyether polyols.
  • Styrene Butadiene: Styrene-Butadiene rubber (SBR) has properties similar to those of natural rubber.
  • Virgin Teflon: Because Teflon is a hard plastic rather than a stretchy elastomer, it is uncommon to see an o-ring that is made entirely of Teflon.

The O-Ring materials below are USUALLY SUITABLE for static seal in the environment containing Stearic Acid.

  • Butyl: Butyl (IIR) is a synthetic rubber, a copolymer of isobutylene and isoprene.
  • Epichlorohydrin: Epichlorohydrin (ECO) has properties similar to nitrile rubber but with better heat and oil resistance as well as better low temperature flexibility.
  • Ethylene-Propylene: Ethylene-propylene (EP) is a copolymer of ethylene and propylene.
  • Neoprene: Neoprene is a homopolymer of chlorobutadiene (CR).
  • Hydrogenated Nitrile: Hydrogenated Nitrile Butadiene Rubber (HNBR) is also known as Highly Saturated Nitrile (HSN).
  • Polysulfide: Polysulfide was one of the first commercial synthetic elastomers.
  • Silicone: Silicone is a semi-organic elastomer with outstanding resistance to extremes of temperature.

The following O-Ring materials are SOMETIMES OK for static seal but not for dynamic seal in the environment containing Stearic Acid.

  • Fluorosilicone: Fluorosilicone combines excellent low-temperature performance of silicone with improved chemical resistance.
  • Hypalon: Hypalon is the traenme of a clasof Chlorosulfonated Polyethylene (CSM).

O-Ring materials that are NOT SUITABLE for using in the environment containing Stearic Acid include

  • Polyacrylate: Polyacrylate (ACM) is a class of copolymer of ethyl and acrylates.
Additional Information

There is not enough data to determine whether the following common O-Ring materials are suitable for using in the environment containing Stearic Acid or not.

  • Natural Rubber: Natural rubber is a product coagulated from the latex of the rubber tree, hevea brasiliensis.
  • Cast Polyurethane: Cast Polyurethane exhibits outstanding tensile strength and abrasion resistance in comparison with other elastomers.
  • Vamac: Vamac is the tradename of a class of Ethylene Acrylic elastomer (AEM).
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Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Selecting the Right 3D Printer

Discover how to choose the right 3D printer for your needs and the key performance attributes to consider.

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A white paper to assist in the evaluation of 3D scanning hardware solutions.

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