Tyvek / DuPont™ Tyvek® 400 SFR


DuPont™ Tyvek® 400 SFR

DuPont™ Tyvek® 400 SFR Coverall. Relaxed Fit Design. Collar. Storm flap. Red Zipper. Open Wrists and Ankles. Red External Serged Seams. White.

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Name Description
Full Part Number ST120SWHxx0025yy (xx=size;yy=option code)  Help
Fabric/Materials Tyvek® 400 SFR
Design Coverall w/ Open Wrists and Ankles
Seam Serged (external), red
Color White
Quantity/Box 25 per case
Sizes MD, LG, XL, 2X, 3X, 4X, 5X, 6X
Option Codes 00


DuPont™ Tyvek® 400 SFR garments are lightweight, disposable secondary flame-resistant overgarments designed to help protect and preserve primary flame-resistant garments, while providing an ideal balance of protection, durability, and comfort.

In the event that a flash fire occurs, Tyvek® 400 SFR garments won't ignite and won't contribute to additional burn injury if appropriate primary flame-resistant personal protective equipment, such as DuPont™ Nomex®, is worn beneath.

Composed of flash spun high density polyethylene breathable nonwoven Tyvek® fabric that has been flame-retardant treated, available only from DuPont, Tyvek® 400 SFR garments offer an inherent barrier against particles (down to 1.0 micron in size).

Tyvek® 400 SFR represents a new generation of disposable secondary flame-resistant garment technology. Compared to traditional disposable secondary flame-resistant garments that have been available for years, Tyvek® 400 SFR is a differentiated multi-hazard garment solution, offering superior particle barrier protection and improved durability in a lighter-weight fabric. This unique combination of performance allows Tyvek® 400 SFR garments to be worn over primary flame-resistant garments like Nomex® when hazardous particle and flash fire hazards exist. Additionally, Tyvek® 400 SFR is a more sustainable garment solution and can be recycled through the Tyvek® protective apparel recycling program if not contaminated with hazardous materials.

Applications include: oil & gas, general manufacturing/operations, maintenance, dirty jobs, environmental services, utilities.

  • Relaxed fit coverall design features a diamond gusset crotch to allow for unrestricted movement and optimal fit when wearing primary flame-resistant protective clothing beneath
  • Red trim elements – red external stitched seams, red zipper, and red chest patch border
  • Patent-pending design
  • Laydown collar
  • Open wrists
  • Open ankles
  • Storm flap





Physical Properties

Data relating to mechanical performance of the fabrics used in DuPont chemical protective clothing, listed for the selected garment according to the test methods and relevant European standard, if applicable. Such properties, including abrasion and flex-cracking resistance, tensile strength and puncture resistance can help in the assessment of protective performance.

Property Test Method Typical Result
Thickness (PPSH-249) ASTM D1777 6.3 mils
Basis Weight (PPSH-31) ASTM D3776 2.0 oz/yd2
Burst Strength - Mullen. ISO 2758 65.3 psi
Seam Strength ASTM D1683 34 lbf
Breaking Strength - Grab (MD). ASTM D5034 28.7 lbf
Breaking Strength - Grab (CD) ASTM D5034 31.5 lbf
Water Impact Penetration AATCC 42 <0.2 g H2O
Wearing Apparel Flammability 16 CFR 1610 Help Class 1


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