Nitrile Rubber Sheet

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Nitrile rubber sheets, also known as NBR sheets (acrylonitrile butadiene rubber), offer high resistance to petroleum-based oils and fuels, along with a wide range of chemicals, alkalis, mild acids, caustics, animal fats, and organic solvents. Nitrile is the most preferred resilient material for oil and fuel applications.

Features:

• Resistance to water, oil, fuels, and non-polar solvents,
• Impermeable to gases,
• Good rebounding properties (compression set),
• Good elongation and tensile strength,
• Withstand abrasion and wear-tear,
• Excellent adhesion to fabric and metallic surfaces,
• Color stability.

 NBR is available in the grades below, depending on the application:

1. Low-acrylonitrile-content rubber is more flexible at low temperatures and is generally used in vehicle door window seals, wipers, O-rings, hand gloves, and adhesives. 
2. The intermediate type is used for comparatively less flexible products, such as mats and sheets. 
3. High-acrylonitrile-content rubber is meant for rigid and highly resistant hydrocarbon and oil products such as hydraulic and industrial hoses, specialty gaskets, and diaphragm rubber sheets.

Application: 

• Most widely used elastomer used for preparing oil seals, gaskets, and oil-resistant articles.
• It is blended with cork to make rubberized cork sheets, which are used in electric transformers.
• Insulation sheets, made from low-density NBR rubber, are used for air conditioner ducting to prevent heat and temperature loss.
• Nylon fabric or steel wire-mesh-reinforced nitrile rubber sheets are very popular for preparing diaphragms and seals.
• NBR-PVC blended hard sheets for specialized non-abrasive oil resistance applications.

Composition: 

NBR is manufactured using a blend of nitrile polymer, mineral fillers (calcium carbonate), carbon black, and accelerators such as MBTS, TMT, zinc oxide, sulfur, wax, and paraffin oil. These ingredients improve flexibility, tensile strength, and stability at high temperatures.

• Size: Length: up to 10 meters;  Width: up to 1500 mm. 
• Thickness: Rubber sheets manufactured in the range of 0.5 mm to 50 mm.  
• Surface: smooth on both sides, or fabric impression on one side and smooth on the other.
• Color: Mostly black; other colors (red, reen, blue honey, and tan) can also be prepared.

Technical Specifications:   

1. Specific Gravity (gm/cm 3)                                    1.1  to 1.70
2. Hardness (Shore A, ±5)                                           40 to 90
3. Tensile Strength, min (kg/cm 2)                           up to 15 MPA
4. Elongation at break, min(%)                                  up to 600%
5. Compression Set, at 70 °C for 22 hours,              40 to 45 
6. Service Temperature Range                                 -40 °C  to +110 °C 

We also offer "milky white"  nitrile rubber sheets for food-grade applications. Tubing, profiles, and cords are also offered as per the customer’s specifications.