Mallcom - DIAMOND I

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    • By Hazard

    • By Protection

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    Made for protecting your head at the site. This non-ventilated HDPE safety helmet adapts so you can forget you are wearing it with its inner foam padding for greater comfort. Designed and developed including features such as a high-density liner and a comfortable textile harness system which create unparalleled wearer comfort and acceptability.

    Key Features

    • Made from UV resistant high density polyethylene (HDPE) without ventilation.
    • Textile lining with 3 bands and 8 fixing points.
    • Ultra high strength outer shell.
    • Side, front and rear impact protection from the shock absorbing liner.
    • Absorbent sweat band.

    Design :

    • Intuitive thumb and forefinger press points for easy adjustment of the wheel ratchet, offers diverse size ranges for true one size fits all.
    • Liner optimises low angle impact performance.
    • Extremely comfortable terylene webbing moulds to the individual wearer's head.
    • Lightweight EPS liner reduces weight while still offering maximum protection.
    • Non-ventilated zip adjustment from 53 cm to 63 cm.

    Industry / Job : Heavy Engineering, Automobile & Auto Ancillary, Iron & Steel, Mining & Metallurgy, Construction & Civil, Aerospace & Aviation, Consumer Goods (FMCG), Cement

    Hazard / Risk : Impact, Falling Object, Bump, Projectiles, Abrasion

    How To Use

    • We recommend replacing your helmet in 2 cases - a) After a fall In the event of a fall, the material of your helmet can deteriorate or even break. b) After 5 years of use, the foam of your helmet degrades over time.
    • To adjust your helmet, a) Place the helmet in the center of the head. b) Adjust the straps by rotating the knob for a perfect fit.
    • The helmet should be in contact with your head, without tipping forward, backward, or sideways, even when you are moving. You can also close the ventilation if the need be.
    • Store the helmet in a dry place away from direct sunlight, and avoid high temperatures (> 60°C).
    • Clean the outside with a simple soft sponge and neutral soap.

    Tests Conducted

    • Shock absorption test: The helmet shall be mounted on a wooden head form of appropriate size. The wooden striker weighing 3 kgs and having a horizontal striking face of 180 mm X 180 mm, shall be raised to a clear height of 1.5 m above the point of contact with the helmet and allowed to fall freely. A record of the force transmitted during impact shall be made.
    • Method of testing penetration resistance: Mount helmet on an appropriate headform. Drop freely a plumb bob of 500 gms mass with a conical steel point having an included angle of 36 degrees and a spherical point radius of not more than 0.5 mm from a clear height of 3.0 m with the pointed end downwards on to the top of the crown of the helmet. Examine the helmet for piercing or denting, failure of any integral parts etc.
    • Method of testing flammability resistance: With the helmet upside down and the burner angled at 45 degrees to the vertical, the end of the flame shall be applied to the outside of the shell at any suitable point between 50 & 100 mm from the crown for a period of 10 seconds. The plane tangential to the test point shall be horizontal. The shell shall be examined for flaming 5 seconds after removal of the flame.
    • Method of testing electrical resistance: Invert the helmet and place it on a frame in a suitable container. With a solution of 6g/l of water, fill the container and the helmet to within 12mm of the junction of the brim and the dome, or if the helmet is provided with holes to a depth of 12 mm below the holes. Allow the helmet to remain in the solution for a period of 18 to 24 hours and maintain the temperature of 25 degrees to 35 degrees Centigrade during this period. Then apply an alternating voltage of 2000 V at 50Hz for 1 minute between electrodes placed in the solution inside and outside the helmet respectively. If no electrical breakdown occurs, disconnect the high voltage supply and connect a milliammeter in the circuit on each side of the electrode. Raise the test voltage slowly observing the ammeter reading, until the applied voltage is 2000V.
    • Method of testing water absorption: The sample used for shock absorption is used for carrying out this test. Weigh the sample (full shell). Immerse for 24 hours in water at a temperature of 25 to 35 degrees centigrade. Remove from water, dry the surfaces by wiping them and weigh again. Report the average gain in mass as a percentage.
    • Method of testing heat resistance: Place the shell in an oven maintained at a temperature of 93 degrees centigrade. The shell shall be shielded from direct radiation during the test. Remove the shell from the oven and examine for separation, distortion or softening.


    • Sweatband absorbs the sweat and prevents it from running into the eyes.
    • The easily replaceable sweatband is made of a material which is highly sweat-absorbent, cushioned, dermatologically tested, anti-allergic, skin-friendly and anti-skin-irritant.
    • Multiple positions of head measurement possible (top/low).
    • Easily detachable clamps enable easy replacement of chin strap.
    • Provided with side slots for fitting face and hearing accessories.

    Products Used in Same Industry

    Diamond I Helmet