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Paracril C is a copolymer of butadiene and acrylonitrile, hot polymerized with a non-staining stabilizer.

Polymer Name: Acrylonitrile Butadiene Rubber (NBR)

Chemical Family: Nitrile Rubbers

Features: Low Absorption, Low Corrosion, Low Temperature Flexibility, Oil Resistance, Oil Resistant

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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
CAS No.
128-37-0
EC No.
204-881-4

Features & Benefits

CASE Ingredients Features

Applications & Uses

Plastics & Elastomers End Uses
Applications

Paracril C offers an excellent balance of low temperature flexibility with oil resistance, fast mixing, low water absorption and low corrosion. It is recommended for automotive products, seals, hoses, O-rings, packings, and thermoplastic blends.

Recommended Appliactions:

  • Seals
  • Custom mix
  • Adhesives

Properties

Physical Form
Chemical Properties
ValueUnitsTest Method / Conditions
Total Volatile Mattermax. 1%ASTMD 5668
Total Ashmax. 0.8%ASTMD 5667
Bound ACN33.7 - 36.7%INSA
Specific Gravity0.99g/ccASTMD 297
Mooney Viscosity73 - 87MUASTMD 1646
Cured Properties
ValueUnitsTest Method / Conditions
Curing Time at 160°C (ML)3.9 - 8.6lb-inASTMD 2084
Curing Time at 160°C (MH)23.8 - 35.8lb-inASTMD 2084
Curing Time at 160°C (tc (1))min. 2.5 - 4.5-ASTMD 2084
Curing Time at 160°C (tc (50))min. 4.3 - 6.5-ASTMD 2084
Curing Time at 160°C (tc (90))min. 13.1 - 21.7-ASTMD 2084

Regulatory & Compliance

Certifications & Compliance

Packaging & Availability

Packaging Type
Packaging and Storage

This product is commercialized in 25 Kg/Bale (55 Lb. /Bale) - 1,000 Kg/Skid - Net (2,200 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 C “Material Safety Data Sheet” (MSDS) for more detailed handling and storage information.