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Gaskets, also known as static seal is a mechanical element use to prevent the leakage of fluid between two components which are static or don’t have relative motion. Gaskets can be made of metallic or non-metallic material.

Metallic: Lead, copper, aluminum.

Non-metallic: Asbestos, cork, rubber.

Oil seals, also called dynamic seals are used to prevent leakage of fluid between two components having relative rotary or sliding motion. Seals also prevent entry of foreign particles like dust and dirt. Commonly made of rubber and cork material.


Types of materials:


This synthetic rubber copolymer of acrylonitrile (ACN) and butadiene, commonly known as nitrile butadiene rubber (NBR), is a popular choice that is often specified when gasoline, oil and/or greases are present.


  • Temperature range: -65° to 250°F
  • Very good resistance to oils, solvents and fuels.
  • Good abrasion resistance, cold flow, tear resistance.
  • Preferred for applications with Nitrogen or Helium.
  • Poor resistance to UV, ozone, and weathering.
  • Poor resistance to ketones and chlorinated hydrocarbons.
  • Utilized in aerospace and automotive fuel handling applications



The composition of this material starts with the copolymerization of ethylene and propylene with a third monomer, a diene, being added vulcanize the material with sulfur.


  • Temperature range: -75° to 300°F
  • Excellent heat, ozone and weather resistance.
  • Good resistance to polar substances and steam.
  • Excellent electrical insulating properties.
  • Good resistance to ketones, ordinary diluted acids, and alkalines.
  • Poor resistance to oils, gasoline, and kerosene.
  • Poor resistance to aliphatic hydrocarbons, halogenated solvents, and concentrated acids.
  • Utilized in refrigerated/cold-room environments, automotive cooling systems and weather-stripping applications



The neoprene family of synthetic rubbers is produced by the polymerization of chloroprene and is also known as polychloroprene or Chloroprene (CR).


  • Temperature range -70° to 280°F
  • Excellent impact, abrasion and flame-resistant properties.
  • Good tear resistance and compression set.
  • Excellent water resistance.
  • Good resistance to moderate exposure to ozone, UV, and weathering as well as oils, greases, and mild solvents.
  • Poor resistance to strong acids, solvents, esters, and ketones.
  • Poor resistance to chlorinated, aromatic, and nitro-hydrocarbons.
  • Utilized in aquatic environment applications



These rubbers are high-polymer vinyl methyl polysiloxanes, designated as (VMQ), that perform very well in challenging thermal environments.  Due to their purity, silicone rubbers are particularly well suited for hygienic applications.


  • Temperature range: -148° to 482°F
  • Excellent high temperature resistance.
  • Outstanding UV, ozone and weather resistance.
  • Exhibits the best low temperature flexibility of the materials listed.
  • Very good dielectric properties.
  • Poor tensile strength and tear resistance.
  • Poor resistance to solvents, oils, and concentrated acids.
  • Poor resistance to steam.
  • Utilized in food & beverage applications and pharmaceutical environment applications



Fluoroelastomers that are categorized under the designation FKM.  This class of elastomers is a family comprised of copolymers of hexafluoropropylene (HFP) and vinylidene fluoride (VDF or VF2). FKM is known as the solution of choice when high temperature as well as chemical resistance is required.


  • Temperature range -20° to 600°F
  • Best high temperature resistance.
  • Outstanding UV, ozone and weather resistance.
  • Poor resistance to ketones, low molecular weight esters.
  • Poor resistance to alcohols and nitro-containing compounds
  • Poor resistance to low temperature.
  • Utilized in aquatic sealing applications, automotive and aerospace fuel applications, lubricant and hydraulic systems