We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brown flame-resistant hard hat liner with hook-and-loop closure and reflective strip

Occunomix

Occunomix LP690 Flame Resistant Liner Arc 21 cal/cm² personal protective equipment

SKU CH-E059-EW527

Flame-resistant hard-hat liner rated at 21 cal/cm² Arc flash protection meets ASTM F1506 and NFPA 70E standards

  • MaterialHAWA
  • ATPV 21 cal/cm² rating protects against arc flash hazards
  • NFPA 70E and ASTM F1506 compliance meets workplace safety standards
  • Flame-resistant cotton and modacrylic blend resists ignition and self-extinguishes
  • Universal one-size design with hook-and-loop closure fits most hard hats
  • Horizontal reflective strip on back enhances low-light visibility

Arc-rated liner for hard hats

The Occunomix LP690 is a flame-resistant liner that attaches to a hard hat and carries an ATPV rating of 21 cal/cm². It meets Arc Flash PPE Category 2 and complies with ASTM F1506 and NFPA 70E for workers exposed to electric-arc hazards.

Replaces non-rated liners when Category 2

The jump is worth it when a task demands Arc Flash PPE Category 2 and the current liner lacks an ATPV rating or falls below 21 cal/cm². It is not for buyers who need Category 3 or 4 protection or who require a liner certified to a different arc-rating standard.

Cotton and modacrylic blend maintains protection

The 6 oz fabric uses a cotton and modacrylic blend with a hook-and-loop closure and tabs that stay secure during long shifts. Horizontal reflective strip on the back and warming-pack pockets support visibility and comfort in cold conditions without degrading the arc rating.

Highlights

  • ATPV 21 cal/cm² rating protects against arc flash hazards
  • NFPA 70E and ASTM F1506 compliance meets workplace safety standards
  • Flame-resistant cotton and modacrylic blend resists ignition and self-extinguishes
  • Universal one-size design with hook-and-loop closure fits most hard hats
  • Horizontal reflective strip on back enhances low-light visibility

Specifications

BrandOCCUNOMIX
MaterialHAWA

Questions about this item

Does the LP690 liner fit a standard hard hat with hook-and-loop tabs?

Yes, the liner includes hook-and-loop closure and tabs designed to attach to a hard hat for secure mounting.

How do I install the liner on my hard hat, and what step is often missed?

Align the tabs with the hard hat suspension points, press the hook-and-loop strips firmly together, and ensure the reflective strip sits centered at the back above the neck for proper orientation.

When should I replace the liner to maintain its 21 cal/cm² ATPV rating?

Replace the liner if the cotton-modacrylic fabric shows wear, contamination, or damage, or after any arc flash exposure, as degradation reduces the Arc protection level.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.