Figure 1: Trans-1,4-PolyIsoprene - JET Rubber Inc

Material Property Data Sheets are for reference purposes only. We recommend that elastomer selections

are tested in their application, to verify material performance and material resistance.

1240 Boyles St. Houston, Texas 77020 • 713-673-5202-Tel • 713-674-2727-Fax • www.jetrubberinc.com

Natural Rubber

Figure 1: Trans-1,4-PolyIsoprene

Description: Natural Rubber is the product of the sap of the Hevea Tree.

Characteristics: Natural Rubber features high tensile strength; superior abrasion

resistance and tear resistance and outstanding resilience properties. Natural Rubber

features good resistance to organic acids and alcohols, with moderate resistance to

aldehydes.

Typical Applications: Natural Rubber is mainly used for dampeners due to its

ability to absorb vibration. It is pre-dominantly used for tires. They are commonly

used in oil savers, water savers and pipe wiper applications.

Limitations: Due to its poor compression set performance at elevated temperatures

and lack of resistance to petroleum fluids, Natural Rubber is not widely used in the

sealing industry. The medical industry has moved away from using Natural Rubber

due to allergic reactions reported after prolonged contact.

ASTM D1418 Abbreviation NR ASTM D2000 Classification AA Polymer Nomenclature Polyisoprene

Physical Properties

Durometer Hardness Range 35 – 90 (Shore A) Tensile Strength (psi) 500 – 3500 Elongation @ Break (%) 300% – 900% Thermal Properties

Low Temperature Range (oF) -50oF – -20oF High Temperature Range (oF) 180oF – 220oF

WC-72-02-12 Typical Material Properties Data Sheet for Rubber Elastomer Process Owner: Engineering / Quality Effective Date: 8/17/2015 Rev. A Pg. 1 of 13 Approved: 8/17/2015 2:35 PM - Jim Tarsinos




Nitrile / Buna N

Figure 2: Poly (Acrylonitrile-co-Butadiene)

Description: Nitrile is a complex family of unsaturated copolymer of acrylonitrile and

butadiene. It is commonly considered as the workhorse of the industrial and

automotive rubber products industries.

Characteristics: Nitrile rubbers features low compression set, high tensile strength

and high abrasion resistance properties. Nitrile possesses superior resistance

towards petroleum based hydraulic fluids, very good resistance towards oil, gasoline,

alkalis and acids and good resistance towards hydrocarbon solvents.

Typical Applications: Nitrile is typically used for oil-resistant applications. Blow Out

Preventer (BOP), Bar Packers, Hammer Union Seals are some common examples.

Limitations: Nitrile compounds have inferior resistance to ozone and sun light.

Chemically, nitrile compounds have poor resistance to oxygenated solvents.

ASTM D1418 Abbreviation NBR ASTM D2000 Classification BF, BG, BK, CH Polymer Nomenclature Acrylonitrile Butadiene

Physical Properties


Low Temperature Range (oF) -40oF – 0oF High Temperature Range (oF) 210oF – 250oF

WC-72-02-12 Typical Material Properties Data Sheet for Rubber Elastomer Rev. A Pg. 2 of 13




Styrene Butadiene

Figure 3: Poly (Styrene-co-Butadiene)

Description: Styrene Butadiene is a family of copolymers that consists of styrene

and butadiene. SBR was the elastomer substituted for Natural Rubber during World

War II. The properties of the compound are similar to Natural Rubber.

Characteristics: Styrene Butadiene features excellent impact strength, very good

tensile strength, abrasion resistance, resilience and flexibility at low temperature

applications.

Typical Applications: Styrene butadiene is typically used to manufacture Cement

Plugs, Liner Wipers and Flex Plugs. The main use for Styrene Butadiene today is in

the manufacturing of automobile and truck tires, and conveyor belts.

Limitations: Styrene Butadiene is not recommended for exposure to petroleum oils,

most hydrocarbons, strong acids, ozone and sunlight. This compound is seldom

used in sealing applications.

ASTM Abbreviation SBR ASTM D-2000 Classification AA, BA Polymer Nomenclature Styrene Butadiene

Physical Properties







Neoprene

Figure 4: Polychloroprene

Description: Neoprene is a homopolymer of chlorobutadiene (chloroprene).

Neoprene was the one of the earliest synthetic material developed as an oil-resistant

substitute for Natural Rubber. Neoprene exhibits good chemical stability, and

maintains flexibility over a wide temperature range.

Characteristics: Neoprene can be used in innumerable sealing applications due to its broad base of desirable working properties such as: good resistance to petroleum oils; good resistance to ozone, sunlight and oxygen aging; relatively low compression set; good resilience; outstanding physical toughness; and reasonable production cost. Typical Applications: Neoprene is used in a number of components in the

transportation. Neoprene is also used in bridge bearing pads and seismic pads for

earth quakes. The compound is highly recommended for refrigeration sealing

purposes.

Limitations: Neoprene is generally attacked by aromatic and oxygenated solvents.

Neoprene also cannot be utilized for low temperature flexibility applications.

ASTM Abbreviation CR ASTM D-2000 Classification BC, BE Polymer Nomenclature Polychloroprene

Physical Properties

Durometer Hardness Range 40-90 (Shore A) Tensile Strength (psi) 500 – 3000 Elongation @ Break (%) 100% – 800% Thermal Properties






Butyl

Figure 5: Isobutylene Isoprene

Description: Butyl is a copolymer of isobutylene and isoprene.

Characteristics: Butyl rubber has superior impermeability to gases. It also features

good resistance to ozone and sunlight aging. The long poly isobutylene segments of

its polymer chains gives Butyl its good flex properties. Butyl has good resistance to

oxygenated solvents, synthetic fluids and other polar solvents.

Typical Applications: Butyl is highly effective in vacuum sealing applications. It is

also a good sealing solution for hydraulic systems. Butyl also works extremely well in

shock dampening applications.

Limitations: Butyl is poor resistance to hydrocarbon solvents and oils, and diester-

based lubricants.

ASTM Abbreviation IIR ASTM D-2000 Classification AA, BA Polymer Nomenclature Isobutylene Isoprene

Physical Properties

Durometer Hardness Range 40 – 90 (Shore A) Tensile Strength (psi) 500 – 3000 Elongation @ Break (%) 300% - 850% Thermal Properties






Hydrogenated Nitrile

Figure 6: Hydrogenated Acrylonitrile Butadiene

Description: Hydrogenated Nitrile or Highly Saturated Nitrile is the product of the

hydrogenation of Nitrile, resulting in varying degrees of saturation of the polymeric

chain.

Characteristics: Hydrogented Nitrile can be formulated for service ranging from -

85OF to 350F. Similar to Nitrile, increasing the amount of acrylonitirle content

improves oil resistance for low temperature performance. HNBR features better

ozone resistance compared to Nitrile. The compound also features higher

temperature resistance and higher tensile strength compared to nitrile compound.

Typical Applications: Hydrogenated Nitrile is highly effective for oil resistant

applications, including exposure to oil additives like detergents anti-oxidants and

anti-wear agents. The compound can resist exposure to oil soured with metal sludge.

Hydrogentated Nitrile seals work very well for oil well applications.

Limitations: Chemically, Hydrogenated Nitrile has poor resistance to esters, ethers,

ketones and chlorinated hydrocarbons.

ASTM D1418 Abbreviation HNBR ASTM D2000 Classification DH Polymer Nomenclature Hydrogenated Acrylonitrile

Butadiene

Physical Properties







Epichlorohydrin

Figure 7: Homopolymer (CO)

Description: Epichlorohydrins are oil resistant compounds that are available in

homomer (CO), copolymer (ECO), and terpolymer (GECO) formats.

Characteristics: Epichlorohydrin features low solvent and gas permeability;

excellent resistance to ozone and weathering; and excellent resistance to

hydrocarbon oils and fuels. The compound is very stable through fluctuating

temperature applications.

Typical Applications: Epichlorohydrins are ideally used in the oil and gas industry

where a little higher temperature capability than Nitrile is required. The compound is

also used for fuel and air conditioning system components.

Limitations: At elevated temperatures (250° to 275°F), Epichlorohydrin features

only fair compression set properties. The compound possesses low resistance to

ketones, ester, aldehydes, chlorinated and nitro hydrocarbons.

ASTM D1418 Abbreviation CO, ECO ASTM D2000 Classification CH Polymer Nomenclature Epichlorohydrin

Physical Properties







Carboxylated Nitrile

Figure 8: Poly (Acrylonitrile-co-Butadiene) Dicarboxy Terminated

Description: Carboxylated Nitrile is an improved version of the Nitrile with a

carboxyl group added to the formulation.

Characteristics: Carboxylated Nitrile has superior abrasion resistance and tear

resistance, while still having improved oil resistance. The compound features good

ozone and weather resistance. XNBR compounds provide high tensile strength and

good physical properties at high temperatures.

Typical Applications: Carboxylated Nitrile is mainly used for hoses, rubber belts,

sealing parts, special purpose articles in oil well, reciprocating oil seal, rubber seal,

gaskets and O-rings.

Limitations: Carboxylated Nitrile has low resistance to brake fluids, ketones, esters

and strong acids.

ASTM D1418 Abbreviation XNBR ASTM D2000 Classification BF, BG, BK, CH Polymer Nomenclature Carboxylated Acrylonitrile

Butadiene

Physical Properties







Ethylene Propylene

Figure 9: Poly (Ethylene-co-Propylene)

Description: Ethylene Propylene Diene (EPDM) is a copolymer of ethylene and

propylene (EPR), combined with a third co-monomer adiene.

Characteristics: Ethylene Propylene features excellent ozone, weather and sunlight

resistance. The compound also features good heat resistance, low compression set

properties and great flexibility during low temperature applications. EPDM has good

chemical resistance to acids and solvents like MEK and Acetone. The compound is

good for use in phosphate-ester based fluids and glycol based fluid systems.

Typical Applications: Ethylene Propylene is mostly used for weather resistant

uses, automotive brake systems, automobile cooling systems, water applications,

and low torque drive belts. EP is often used in hot water and steam applications up

to 150C (peroxide cure types).

Limitations: Ethylene Propylene has low resistance to petroleum products like

mineral oils, grease and fuels and offer no resistance to hydrocarbon fluids.

ASTM D1418 Abbreviation EP, EPDM ASTM D2000 Classification AA, BA, CA, DA Polymer Nomenclature

Ethylene Propylene Diene

Physical Properties







Fluorocarbon/Fluoroelastomer/Viton®

Figure 10: Poly (Vinylidiene Fluoride-co-Hexafluropropylene)

Description: Fluoroelastomers, which were developed and introduced in the mid-

1950’s, provide extraordinary levels of resistance to chemicals, oils and heat, and a

useful service life above 392OF

Characteristics: Viton® features outstanding resistance to weather, ozone, oxygen,

high temperatures, fuels, aromatics and hydraulic fluids. Hence this material is used

for O-rings and cord. Fluorocarbon possesses low gas permeability, low

compression set, and good mechanical properties. The higher the fluorine content

the higher the resistance to swell in high oxygenated fuel and octane blends. This

gives the elatomer superior performance in Ethanol/Methanol blended gasoline.

Typical Applications: Fluorocarbons work well as seals for aircraft engines and

automotive fuel handling systems.

Limitations: Fluorocarbons have low resistance to ketones, low molecular weight

esters and ethers and amines. They are not recommended for low temperature

flexibility requirements. Fluorocarbon also possesses poor resistance to tears and

cuts.

ASTM D1418 Abbreviation FMK ASTM D2000 Classification HK Polymer Nomenclature

Vinylidiene Fluoride hexafluropropylene

Physical Properties


Low Temperature Range (oF) -30oF – 0oF High Temperature Range (oF) 450oF – 500oF





Tertrafluoroethylene-Propylene / AFLAS ®

Figure 11: Tetrafluroethylene-Propylene

Description: AFLAS ® is a copolymer of tetrafluoroethylene/propylene.

Characteristics: TFE/P is utilized in many applications due to its resistance to high

temperature and wide range of chemicals. TFE/P features resistance to steam, hot

water, various lubricants, acids and base, and many industrial solvents. Compared to

most fluoroelastomers, TFE/P performs well in low temperature applications.

Typical Applications: TFE/P is commonly used as seals in aerospace, oilfield, and

chemical industries.

Limitations: TFE/P has more volume swell compared to other fluoroelastomers,

hence they are not recommended for applications with exposure to automotive fuels.

TFE/P is not very resistant to ketones, toluene and ethers.

ASTM D1418 Abbreviation FEPM ASTM D2000 Classification HK Polymer Nomenclature

Tertrafluoroethylene/ Propylene

Physical Properties


Low Temperature Range (oF) 30oF – 35oF High Temperature Range (oF) 300oF – 500oF





Silicone Rubber

Figure 12: Poly Dimethyl Silicone

Description: Silicon Rubber is a group of elastomers made from the elements

silicon, hydrogen, oxygen and carbon. This group of elastomers are known for their

retention of flexibility and low compression set properties.

Characteristics: Phenyl based silicones (PVMQ) can perform at temperatures as

low as -148°F. Newer polymers are capable of withstanding short term high

temperature exposure of up to 600°F. Silicone is resistant to ozone, hot air, UV

radiation, and engine/transmission oils.

Typical Applications: Static seals in extreme temperature situations. Silicone seals

are used for medical devices and are compatible with FDA regulations.

Limitations: Silicone is not applicable in dynamic sealing applications due to

relatively high coefficient of friction and low tear strength. Silicone does not perform

well in concentrated acids, fuels, gear oils, and steam.

ASTM D1418 Abbreviation VMQ, PMQ, PVMQ ASTM D2000 Classification FC, FE, GE Polymer Nomenclature

Polydimethylsiloxane

Physical Properties







Chlorosulphonated Polyethylene or Hypalon®

Figure 13: Chlorosulfonated Polyethylene

Description: Hypalon® Rubber, previously a registered trademark of DuPont

Elastomers, is a group of peroxide and sulfur curable elastomers based on

chlorosulfonated and chlorinated polyethylene. As a result of the manufacturing

process, these polymers produce an elastomer with a completely saturated backbone

as well as pendant groups suitable for varied vulcanization approaches.

Characteristics: Due to its unique backbone configuration, Hypalon® rubber vulcanizates are extremely resistant to attack by ozone, weather and oxygen. The elasotmer is also flame resistant and abrasion resistant.

Typical Applications: Because of its unique properties, Hypalon® rubber parts

perform very well in rubber hoses, cable sheathing and roll cover applications.

Limitations: Hypalon® Rubber has poor to fair resistance to aromatic solvents;

limited flexibility at low temperatures; fair resilience and compression set.

ASTM D1418 Abbreviation CSM ASTM D2000 Classification CE Polymer Nomenclature

Chlorosulfonated-polyethylene

Physical Properties




Figure 1: Trans-1,4-PolyIsoprene - JET Rubber Inc

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