Gajra glassfibre pvt. Ltd. Supplies elastomeric nitrile rubber. Gajra glassfibre pvt. Ltd. Is the manufacturer of insulation materials. Elastomeric nitrile rubber is used for window acs, plumbing and light commercial use. Elastomeric nitrile rubber is available with surface vapour barriers to ensure that they are properly installed as even a small tear or puncture will be sufficient to render the total vapour barrier ineffective.