The NASCO Sentinel™ FR/AR Thermal Jacket and Vest serve as highly durable, arc and flash fire rated thermal insulation layers designed specifically for personnel working through high-risk, cold and wet shifts.
Core Protective Design and Material Properties:
Thermal Defence: Engineered with an inner 100% Nomex® fleece liner that traps warmth to maximise comfort in freezing work environments.
Weather and Wind Defence: Utilises an outer FR Cotton Knit shell that blocks harsh wind and provides external water resistance.
Multi-Hazard Protection: Delivers essential non-conductive protection, tested rigorously to comply with both ASTM F1506 for electric arc and ASTM F1930 for hydrocarbon flash fires.
Worker Movement: The flexible material minimises restriction, ensuring workers can safely manoeuvre and perform heavy industrial tasks without typical winter outer gear stiffness.
APPLICATION: Gas and Electric Distribution and Transmission, Electrical Switching, Electrical Maintenance, Storm Restoration, Meter Servicing, Heavy Industry
Flame resistant Cotton is a specially treated fabric designed to offer protection in high-risk industrial environments, while maintaining the comfort of natural fibres. It works by forming a protective char barrier that self-extinguishes when the flame source is removed, ensuring it does not continue to burn, melt or drip. When exposed to heat, the flame retardant chemicals catalyse the fabric's dehydration and carbonisation process. This causes the fabric to form a stable, non-flammable char layer instead of burning or melting into a liquid. This char layer acts as a protective, low-permeable barrier that prevents oxygen reaching the fabric and stops heat from reaching the wearer's skin.
Key working principles of FR Cotton:
PRINCIPLE
ACTION
EFFECT
Charring
Converts cotton to carbon barrier
Insulates and stops fuel feed
Self-Extinguishing
Interrupts combustion chain
Fire/flame ceases when ignition source is removed
No-Melt
Remains solid under threat
Prevents molten debris burns
Breathability
Allows heat dissipation
Improves comfort/worker safety
FR Polyurethane
FR Polyurethane moisture barriers are specialised materials designed to provide a durable, seamless waterproofing layer that simultaneously protects wearers from liquid penetration, moisture-driven degradation and flame and heat hazards. FR Polyurethane is often employed in industrial, construction and high-risk environments where the barrier must not only exclude water, oil or chemicals but also resist ignition, reduce flame spread and self-extinguish if exposed to open flames. FR Polyurethane works by incorporating additives or reactive agents that disrupt the combustion process at various stages, primarily through chemical inhibition and the formation of a protective insulating char layer. When exposed to heat, the material prevents ignition, reduces heat release rates and self-extinguishes.
Key features:
Arc Flash Resistance.
Flash Fire Resistance.
High Moisture/Vapour Resistance.
Exceptional Durability.
Flexibility and Adhesion.
Chemical Resistance.
Liner: 100% Nomex®
Arclin Nomex® is an inherently heat and flame resistant meta-aramid synthetic fibre that won't melt, drip or support combustion in air, providing a superior barrier for what's inside from the hazards around it. The unique structure of Nomex® fibre is non-flammable, so performance is built in and can't be washed or worn away. When Nomex® is exposed to intense heat, its fibres thicken and carbonise, absorbing heat energy in the process. The molecular structure of Nomex® not only prevents heat from passing through but also prevents electricity flowing through when exposed to electrical arc. The fibre is also highly resistant to most common acids and alkalis, fluorocarbon refrigerants, transformer oil and silicon.
3M™ Scotchlite™ 5535 Silver Reflective Trim around Chest/Back and Waist and over Shoulders (Vest). Around Chest/Back and Waist and over Shoulders, with Hoops around Biceps and Cuffs (Jacket).
Fall Protection Access.
Full Zipper Front
Two Zippered Front Pockets.
Stand-Up Collar, Drop Tail Hem.
Nomex® Knit Cuffs (Jacket).
Options - NASCO has the ability to create high quality corporate images using ink silk-screening, single and multi-colour heat transfers and reflective logos using 3M™ Scotchlite™ reflective material.
