Eraseal products are precision molded from any the following polymers:

 

   FFKM - Perfluoroelastomer                                              CSM - Chlorosulphonated Polyethylene

   NBR - Acrylonitrile Butadiene Rubber                             ECO - Epichlorohydrin Rubber

   CR - Polychloroprene Rubber                                            X-NBR - Carboxylated Nitrile Rubber

   EPDM - Ethylene Propylene Terpolymers                       HNBR - Hydrogenated Nitrile Rubber

   ACM - Polyacrylic Rubber                                                  IIR - Butyl Rubber (Halogenated & non Halogenated)

   EAM - Ethylene Acrylate Rubber                                      SBR - Styrene Butadiene Rubber

   VMQ - Silicone Rubber                                                       AU - Polyurethane Rubber

   FVMQ - Fluorosilicone Rubber                                          TPU - Thermoplastic Polyurethane

   FKM - Fluorocarbon Elastomer                                        PTFE - Polytetrafloroethylene

   TFE/P - Tetrafluoroethylene Propylene Co-polymers    POM - Polyoxymethylene (Polyacetal)

                                                                                                Nylon – 6/6, 6/10 & 6/12

   

 

 

FFKM

Perfluoroelastomer (FFKM) also commonly known as Kalrez ® or Chemraz®.  This unique material which endures the harshest known environments can now be supplied by us in the form of molded `O’-Rings as per Customer specification.

FFKM has unbeatable resistance to concentrated acids, alkalis, steam, organic alcohols, ketones & esters. It has an attractive wide service temperature range from  -15°F to 570°F (-25° C to 300° C). FFKM is also immune to sudden changes in service environments and lasts much longer than conventional elastomers including FKM (Viton ®).

 

Kalrez ® and Viton® are registered trademarks of Du-pont Dow elastomers Inc. Chemraz® is a registered trademark of Greene, Tweed & Co.

 

 

NBR 

This polymer which is commonly referred to as Nitrile or Buna-N, is a co-polymer of Butadiene and Acryonitrile. They are differentiated based on the percentage of bound Acryonitrile (ACN) content in the polymer. The low ACN polymers have good low temperature flexibility, compression set resistance and good elastic properties, but moderate resistance to oils and fuels. As the ACN content increases, resistance to mineral oils, fuels and greases increases, but properties such as low temperature flexibility, compression set resistance and elasticity deteriorate. Medium ACN polymers exhibit good balance of all the above properties. Normal service temperatures of these polymers range from -15°F to 250°F (-25°C to 120°C).

 

Eraseal offers NBR compounds blended for a wide range of applications which include:

• Compounds for low temperature applications as low as-49°F (-45°C).

• Compounds for high temperature applications up to 265°F (130°C).

• Compounds with very low compression set.

• Compounds for food applications.

• Compounds for general purpose applications.

 

 

CR 

Polychloroprene rubber (CR) is based on 2-chloro - 1, 3 butadiene and is commonly referred to as Neoprene. CR polymer offers flame retardancy characteristics, excellent ageing properties in ozone and weather environments, along with elevated resistance to abrasion and flex fatigue. Polychloroprene exhibits good resistance to mineral oils with high aniline point, greases, refrigerants and water. 

 

Eraseal offers CR compounds blended for a wide range of applications which include:

• Compounds for high friction applications.

• Compounds with excellent flex cracking resistance.

• Compounds for general purpose applications.

 

 

EPDM

This polymer is a terpolymer of ethylene, propylene and some Diene as the termonomer.

Molded parts and seals from EPDM have good resistance to:

• Ozone, ageing and weathering.

• Water and steam.

• Dilute acid, alkalies, ketones, alcohols and polar organic media.

• Phosphate ester based hydraulic fluids.

 

 

ACM 

This polymer is a co-polymer of Ethyl acrylate or Butyl acrylate and a small amount of monomer which facilitates vulcanization.  ACM has excellent resistance to heat, hydrocarbon oils, mineral oils, oxidation and ozone, but poor resistance to water, steam, acids and alkalis.

Normal service temperature of ACM is -15°F to 350°F (-25°C to 175°C). 

 

 

EAM  

This terpolymer of Ethylene, Methyl acrylate rubber (EAM) and a cure site monomer is commonly referred to as Vamac®. This polymer has better heat resistance than ACM. Other Properties include good low temperature flexibility, good resistance to weathering, sunlight, oxygen, ozone and good flame resistance. It has good resistance to Paraffin based mineral oils, water and refrigerants.

Normal service temperature of EAM is -40°F to 350°F (-4O°C to 175°C).

 

Vamac® is the registered trademark of Dupont Dow elastomers LLC"

 

 

VMQ 

These are high molecular weight poly organo siloxanes. VMQ has both Vinyl and Methyl substituent groups on the polymer chain, while PVMQ has an additional Phenyl substituent group on the polymer chain. These polymers have excellent cold flexibility as well as high thermal resistance. They have excellent di-electric properties and very good resistance to attack by oxygen, ozone and sunlight. However, they have moderate resistance to mineral oils.

VMQ offers a very wide service temperature range of -85°F to 485°F (-65°C to 250°C).

 

Eraseal offers silicone compounds blended for a wide range of applications which include:

• Compounds for very high temperature applications up to 570°F (300°C).

• Compounds for very low temperature applications to -185°F (-120°C).

• Compounds with very low compression set.

• Transparent compounds.

• Compounds with good oil resistance.

• Compounds suitable for medical applications .

• Compounds for general applications.

 

 

FVMQ 

FVMQ has a similar polymer structure as that of VMQ and has an additional Fluoro substituent group on the polymer chain. These polymers have very good fuel, oil and solvent resistance in addition to the regular properties of silicones. FVQM is compounded primarily for special applications.

 

 

FKM 

This versatile range of polymers which are commonly referred to as Viton® are used for a vast range of sealing applications due to its resistance to a broad spectrum of chemical and oil media and a wide range of temperatures. The co-polymer types of FKM are co-polymers of Hexa fluoropropylene (HFP) and Vinylidine difluoride (VF2) (Fluorine content = 65-66%) While the terpolymers have Tetra fluoroethylene (TFE) as the Termonomer (Fluorine content = 67-71%).

 

FKM's exhibit excellent resistance to mineral oils, fuels, steam, alcohols, alcohol containing fuels, aliphatic and aromatic hydrocarbons. Chemical and oil resistance improve as the fluorine content of these polymers increase. However, the co-polymer types of FKM give the best compression set resistance.

Typical service temperatures for FKM is -5°F to 485°F (-20°C to 250°C).

 

Eraseal offers FKM compounds blended for a wide range of applications which include:

• Compounds with very low compression set.

• Compounds for high temperature up to 525°F (275°C) dynamic sealing applications.

• Compounds for low temperature applications up to -32°F (-35°C)

• Compounds for general purpose applications.

 

 

TFE/P 

This is a copolymer of Tetra fluoro ethylene and propylene. It shows much better resistance than FKM in high pH caustics, brine solutions, amines engine oils, engine coolants, power steering fluids, corrosion inhibitors and gamma radiation. It also exhibits less sensitivity to changes in chemical environments. TFE/P offers good electrical insulation properties.

Typical service temperatures of this polymer is 14°F to 535°F (-10°C to 280°C).

 

Eraseal offers TFE/P compounds blended for a wide range of applications which include automotive, oilfield, aerospace and industrial environments.

 

 

CSM 

This polymer based on polyethylene has chlorine side groups and chloro sulphonated side groups on the main chain. It is commonly referred to as HYPALON®. Vulcanizates of this polymer have very good resistance to flame, heat, ozone and weathering. CSM also offers good resistance to swelling in hot water, steam, acids, bases, ketones, polar organic media and oxidizing media.

Typical service temperatures of this polymer is -4°F to 300°F (-20°C to 150°C).

 

®Hypalon is a registered trademark of Dupont Dow elastomers LLC.

 

 

ECO 

This is a co-polymer of Epichlorohydrin and Ethylene oxide. ECO vulcanisates have very low permeability to gases and good resistance to weathering and ozone. They exhibit good resistance to mineral oils, greases, vegetable oils, aliphatic hydrocarbons, petroleum and water.

Typical service temperature of this polymer ranges from -40°F to 300°F (-40°C to 150°C).

 

 

X-NBR  

These are terpolymers of butadiene, acrylonitrile and methacrylic acid. As these polymers have caboxylic acid side groups they are referred to as Carboxylated Nitrile rubber. Molded products of X-NBR have very high tensile strength, tear strength and above all improved abrasion resistance than NBR. 

Typical service temperatures of these polymers range from -13°F to 250°F (-25°C to 120°C).

 

 

HNBR  

The elimination of double bonds from the polymer chain of NBR, either partially or completely by hydrogenation, develops Hydrogenated Nitrile rubber. These polymers have much improved heat resistance over NBR. (Heat resistance depends on the degree of hydrogenation). 

HNBR has outstanding resistance to heat, ozone, weathering, mineral oils, crude oils with amines, fuels, greases, aliphatic hydrocarbons and industrial chemicals. HNBR has very good mechanical properties and excellent wear and abrasion resistance.

Typical service temperatures of these polymers are -22°F to 300°F (-30°C to 150°C).

 

Eraseal offers HNBR compounds blended for a wide range of applications which include

• Compounds with very low compression set.

• Compounds for low temperature applications to-40°F (-40°C).

• Compounds for oil drilling applications.

• Compounds for wear and abrasion resistance.

 

 

IIR  

These polymers mainly consist of isobutylene with a small amount of isoprene. The IIR elastomers have low gas permeability and good resistance to ozone and weathering. IIR offers good resistance to glycol based fluids acids bases and steam. The halogenated butyls (CIIR & BIIR) exhibit lower gas permeability, better resistance to ozone, weathering, chemicals and above all, better heat resistance than IIR.

Typical service temperatures of these polymers are -40°F to 290°F (-40°C to 145°C).

 

 

SBR 

This is a co polymer of Butadiene and Styrene. This general purpose polymer has good resistance to dilute organic and inorganic acids water, alcohols and brake fluids.

Typical service temperatures of this polymer is -40°F to 230°F (-40°C to 110°C).

 

 

AU   

These are high molecular weight organic materials having large number of urethane (NH-C-OO) groups. The polyester polyurethanes are referred to as AU. These materials can be compounded for specific hardness characteristics ranging from  40 Shore-A up to 80 Shore-D.

Typical service temperatures of these polymers are -22°F to 175°F (-30°C to 80°C).

 

The general properties of these materials are:

• High mechanical properties, excellent abrasion resistance and good flexibility.

• Very good resistance to ozone and oxidation.

• Good resistance to mineral oils greases and aliphatic hydrocarbons.

 

Eraseal also offers processing of both cast polyurethane compounds and millable gum polyurethanes.

 

 

TPU  

TPU polyurethanes give the highest tensile strength in the polyurethane family and are thermoplastic in nature. They bridge the gap between conventional elastomers and thermoplastics. The abrasion resistance characteristics of TPU materials are excellent and they have much better load bearing capacity than conventional elastomers. Components of TPU will not crack despite repeated flexing and have much better impact resistance than conventional thermoplastic materials. TPU offers very good resistance to ageing, weathering, ozone, oxidation, water, mineral oils, motor fuels, hydraulic fluids and solvents.

Typical service temperature of these materials are 5°F to 250°F (-15°C to 120°C).

 

Eraseal offers thermoplastic polyurethanes from 75 Shore- A to 75 Shore-D.

 

 

PTFE  

This homopolymer of tetra fluoro ethylene is also commonly known as Teflon®. This non elastomeric material has many outstanding properties. PTFE's chemical resistance is superior to any other thermoplastic or elastomer and it has excellent resistance to swelling in almost all known media. This non-toxic material has low co-efficient of friction and is non-flammable. It's electrical insulation properties are excellent .

Typical service temperature range is -450°F to 500°F (-270°C to 260°C).

 

Eraseal provides various virgin PTFE molded components, as well as PTFE filled with graphite, glass fiber, carbon and bronze molded components as per the customer's application requirement.

 

Teflon® is a registered trademark of Du Pont.

 

 

POM 

This thermoplastic material is also referred to Poly Acetal. Acetal offers good stiffness, hardness and strength and has the ability to take very high loads. In many applications it can replace metal parts made from brass and aluminum. It also exhibits better dimensional stability than other thermoplastics in moist conditions due to its very low water absorption characteristics.

Typical service temperatures of this material is -40°F to 285°F (-40°C to 140°C).

 

 

Nylon  

This family of thermoplastics is widely used for anti-extrusion components, Alignment Guard Gland Rings, valve seats and other sealing applications. Nylon is resistant to various petroleum and phosphate ester based hydraulic fluids.

Typical service temperatures are -58°F to 250°F (-50°C to 120°C).