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Tectra Helmet, User Instructions

Elvex Tectra™ safety caps, Type I with four and six point suspensions, ventilated and non ventilated models

Prior to use, it is important that you read all the user instructions and follow the advice and warnings provided below. Elvex Tectra Safety Caps comply with ANSI Z89.1-2008 Type I.


  • Safety Caps are shipped with suspensions unassembled to avoid damage during shipment. Suspensions and cap must be properly assembled and adjusted before use, in accordance with these instructions to insure proper fit and protection.

  • With the cap upside down, first install the suspension strap assembly with fork style suspension hangers, as shown in picture 1 and picture 2. This step is only required for six point suspensions.

  • Next place the main suspension assembly inside the helmet with the brow pad toward the front, and suspension upside down. Install the suspension to the cap by inserting the four suspension hanger keys to the four key slots of the helmet. Push the keys firmly in place until they lock in place.


For Ratchet adjustment: turn the ratchet knob counterclockwise to enlarge the headband and clockwise to make it smaller. With the cap on your head, adjust turn the knob until it fits comfortable and snug to your head. Do not over tighten. For Pin Lock adjustment: pull to release the sizing post of the headband, then adjust the headband to fit comfortably and snugly to your head size. Then lock the pins in place. Adjustment range (head circumference) for the Ratchet suspension is 54 -63 cm, and for the pin-lock suspension 53-60 cm.

   Ratchet and pin-lock adjustments

Headband height adjustment: the headband can be adjusted in three height positions. The adjustment is located at the four suspension hangers (picture below). The headband (or crown strap) can be lowered in order to get a more secure fit, or elevated to give a good fit for any head shape. The suspension straps always stay in the same position, while the headband (or crown strap) moves up and down.

   Height adjustment of the headband, 3 positions.

Video showing how to adjust the height of the crown strap. If you lower the crown strap, the helmet sits more securely on the head.


The chin strap is installed to the cap by inserting the hooks to the two chin strap attachment holes - located on two sides of the cap.


Failure to follow these warnings can result in serious injury or death:

  • Keep the plastic storage bag away from children and infants

  • This cap is designed to provide limited impact and penetration protection to the top of the head. It is not specifically designed to protect against front, side, rear, or lateral impacts

  • Useful Service Life: Inspect the cap and components frequently for cracks, frays, or deterioration. Replace components if any degradation has occurred or replace the cap after exposure to an impact or penetration. Elvex recommends that the safety cap and suspension be replaced every 30 months, under normal working conditions, and more frequently under severe conditions.

  • If your work environment involves temperature extremes (high or low), exposure to sun light or the use of chemicals, consider making more frequent inspections and replacements.

  • This cap complies with ANSI Z89.1-2003 standard for Industrial protective type I safety caps and in most circumstances will be effective against small tools, bolts, light debris, and similar hazards; however some conditions can exceed the cap's capacity to protect against serious injury or death.

  • Class E (20,000 Volts) and G (2,200 Volts) caps provide limited electrical protection as outlined in the ANSI Z89.1-2003 standard. Avoid exposure to live electrical hazards.

  • Ventilated caps comply with ANSI Class C (conductive) and provide no electrical protection.

  • Never place any object between the suspension and safety cap or between the head and the suspension, as the object can reduce the level of protection.

  • Never wear this safety cap or suspension backwards and do not turn the suspension backwards in your safety cap. The cap has only been tested with the suspension mounted in the correct position.

  • Do not drill holes in the shell of the safety cap, to improve ventilation or to mount accessories. The holes will compromise the integrity of the safety cap and can destroy the electrical resistance.

  • Do not apply stickers to the helmet, since the adhesive may negatively affect the strength and integrity of the helmet shell.

  • Do not use for motorcycle riding or other similar activities. Helmet is not tested and approved for such use.

Copyright © 2009, Elvex Corporation