Paracril™ 3350

1 of 64 products in this brand
Paracril 3350 is a copolymer of butadiene and acrylonitrile, cold polymerized with a non-staining stabilizer.

Polymer NameAcrylonitrile Butadiene Rubber (NBR)

End UsesAutomotive Applications, Footwear, Hoses, O Rings, Tires

FeaturesFast Curing, Good Processability, Low Temperature Flexibility, Oil Resistant

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Applications & Uses


Paracril 3350 offers excellent balance of low temperature flexibility with oil resistance, easy processing, fast curing, light color and a good performance in peroxide cure systems. It is recommended for automotive products, seals, hoses, O-rings, packings, adhesives, footwear, rolls and thermoplastic blends.

Recommended Appliactions:

  • Seals
  • Rolls


Chemical Properties
ValueUnitsTest Method / Conditions
Total Volatile Mattermax. 1%ASTMD 5668
Total Ashmax. 0.8%ASTMD 5667
Bound ACN32 - 34%INSA
Specific Gravity0.98g/ccASTMD 297
Mooney Viscosity ML (1+4) at 100°C45 - 55MUASTMD 1646
Cured Properties
ValueUnitsTest Method / Conditions
Curing Time at 160°C (ML)4.7 - 9.3lb-inASTMD 2084
Curing Time at 160°C (MH)32.2 - 48.2lb-inASTMD 2084
Curing Time at 160°C (tc (1))min. 2.3 - 4.7-ASTMD 2084
Curing Time at 160°C (tc (50))min. 2.9 - 6.7-ASTMD 2084
Curing Time at 160°C (tc (90))min. 9 - 18.6-ASTMD 2084

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging and Storage

This product is commercialized in 25 Kg/Bale (55 Lb. /Bale) - 1,200 Kg/Skid - Net (2,600 Lb. /Skid.) rectangular bales individually wrapped in low melting point polyethylene film. Tolerance in all bale and packaging weights +1 percent.

Store in a dry and ventilated area where it will not be exposed to direct sunlight, extreme temperatures or sources of ignition.Please consult Paracril 3350 “Material Safety Data Sheet” (MSDS) for more detailed handling and storage information.