Tyvek / DuPont™ Tyvek® 400 SFR

ST127S WH

DuPont™ Tyvek® 400 SFR

DuPont™ Tyvek® 400 SFR Hooded Coverall. Secondary flame resistance with the protection, durability, and comfort of Tyvek®. White coverall features a relaxed fit design, a standard fit hood, a storm flap, a red zipper, elastic wrists and ankles, and red external serged seams. For use over primary FR clothing. Suitable for oil & gas, manufacturing, maintenance, and utilities applications.

 
 
 
 
 
 
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PRODUCT DETAILS
Full Part Number ST127SWHxx0025yy (xx=size;yy=option code)  Help
Fabric/Materials TYVEK® 400 SFR
Design Coverall w/ Hood, Elastic Wrists and Ankles
Seam Serged
Color White
Quantity/Box 25 per case
Sizes MD, LG, XL, 2X, 3X, 4X, 5X, 6X, 7X
Option Codes 00

Features & Product Details

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
  • Attached standard-fit hood with elastic around face opening
  • Elastic opening for tighter fit at wrist
  • Elastic opening for tighter fit at ankle
  • Storm flap

FINISHED DIMENSIONS

ADDITIONAL EQUIPMENT NEEDED

AVAILABLE OPTIONS

Fabric & Chemical Resistance Data

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.

Featured resources
Property Test Method Typical Result
Thickness ASTM D1777 6.3 mils
Basis Weight 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

SPECIAL WARNINGS

Frequently Asked Questions

Explore frequently asked questions to help you choose and use DuPont Personal Protection products with confidence.
How are Tyvek® 400 SFR garments different from Tyvek® 400 garments?
The Tyvek® fabric used to make Tyvek® 400 SFR is disparate with a proprietary FR coating. The Tyvek® 400 SFR chest patch and label features a red border and states ‘SFR’ and ‘Secondary Flame Resistance.’ The Tyvek® 400 SFR garment has a relaxed fit design and red trim elements including red externally sewn seams and a red zipper.

In what ways can I manage or prevent heat stress?
Chemical protective clothing can interfere with the natural regulation of body temperature. This can lead to a rise in core body temperature and heat stress. Implementing a conservative work/rest schedule or using a cooling system may be effective in reducing heat stress. (Note: Do not wear cooling vests in potentially flammable or explosive environments.) .)

Be aware of the symptoms and treatment of heat stress. If you or your co-workers have symptoms of heat stress such as nausea, dizziness, high heart rates, or excessive heat build-up, leave the work area immediately and remove the ensemble as quickly as possible after decontamination and seek professional care.

The maximum length of time the chemical protective clothing can be worn depends on variables such as the air supply, ambient conditions, climate inside the ensemble, physical and psychological conditions of the wearer, work rate and work load. The TLV® pocket guide from the American Conference of Governmental Industrial Hygienists (ACGIH, Cincinnati) provides corrected heat stress limits for some garments. Similar information is available on the federal OSHA web site (www.OSHA.gov). The WBGT correction factor for chemical protective garments is at least 10°C or higher for chemical garments made of impervious films (such as Tychem® garments) and covering the entire body (hooded coverall or encapsulating designs). For Tyvek® coveralls, the WBGT correction factor is 2°C with a hood and 1°C without a hood.
How can I purchase Tyvek® 400 SFR?
Contact your distributor, local DuPont sales representative, or DuPont Protective Apparel Customer Service at 1-800-931-3456.
How are Tyvek® 400 SFR garments different from other secondary flame resistant (SFR) garments?
Tyvek® 400 SFR garments are unique in several ways. First is the proprietary FR-treated flash spun Tyvek® fabric, available only from DuPont. The Tyvek® substrate offers an inherent breathable barrier against particles down to 1.0 micron in size, providing superior particle protection compared to other disposable SFR garments on the market. Generally, Tyvek® 400 SFR garments are lighter weight and offer improved durability. Featuring design details including red externally sewn seams, a red zipper, and a chest patch with a red border, Tyvek® 400 SFR garments are made with a relaxed fit that enables a greater range of movement while stretching and bending, improves mobility, and is easier to put on over primary flame-resistant garments. Unlike other disposable secondary flame-resistant garments on the market, Tyvek® 400 SFR garments can be recycled through the Tyvek® protective apparel recycling program if they are not contaminated with hazardous materials.
Can Tyvek® 400 SFR garments be recycled?
Yes; in the United States, Tyvek® 400 SFR garments not contaminated with chemical or biological hazards can be recycled for non-hazardous applications through the Tyvek® Protective Apparel Recycling Program. Contact DuPont Personal Protection Customer Service at 1-800-931-3456 for information.
Can Tyvek® 400 SFR garments be worn in cleanroom applications?
Tyvek® 400 SFR garments have not been designed for controlled environment applications. DuPont offers a full line of garments that have been specially manufactured, processed and packaged for use in controlled environment applications. Please see our complete line of controlled environment products at www.safespeccleanroom.dupont.com.
How are Tyvek® 400 SFR garments different from Tychem® 2000 SFR garments?
Tychem® 2000 SFR is suitable for use over top of appropriate primary flame-resistant (FR) protective clothing when chemical splash and flash fire hazards exist. Tychem® 2000 SFR provides an effective barrier against a range of inorganic acids and bases as well as industrial cleaning chemicals and particles larger than 0.3 micron.

Tyvek® 400 SFR is suitable for use over top of appropriate primary FR protective clothing when hazardous particle and flash fire hazards exist. Tyvek® 400 SFR provides an inherent barrier against hazardous and non-hazardous particles (down to 1.0 micron in size).
Why isn’t there a claim made re: ASTM D6413: Standard Test Method for Flame Resistance of Textiles (Vertical Test) for this garment?
In general, the fabric sample should not ignite and continue to burn. Char lengths are not considered meaningful predictors of thermal protective performance of the fabric in flash fire. Additionally, this methodology excludes garment ensembles and trim elements such as elastic, hook and loop fastener, closures, labels, emblems, patches, and other clothing components from testing. Users of only fabric parameters are cautioned that garment components could contribute to burn injury depending on their composition, size, and location on the protective clothing. We do not advocate for inclusion of fabric char length in specifications for these reasons.

A useful reference from the public domain is provided: R. L. Barker, J. Ingram, J. Morton-Aslanis, and A. S. Deaton, “Relationships between Bench Scale Measures of After-Flame and Thermal Shrinkage and Fire-Resistant Garment Performance in Fire Manikin Tests,” in Performance of Protective Clothing and Equipment: 11th Volume, Innovative Solutions to Evolving Challenges, ed. K. Lehtonen, B. P. Shiels, and R. B. Ormond (West Conshohocken, PA: ASTM International, 2020), 1–17.
How can I become a Tyvek® 400 SFR distributor?
Contact your local DuPont sales representative or DuPont Protective Apparel Customer Service at 1-800-931-3456.
Can Tyvek® 400 SFR garments be used as primary flame resistant (FR) garments?
No. Primary flame-resistant (FR) garments, such as those made with DuPont™ Nomex® Essential (Nomex®IIIA) fabric, can be worn alone to provide the necessary level of protection from a flame/thermal threat. Garments made of DuPont™ Tyvek® 400 SFR fabric are not substitutes for primary flame-resistant protective garments. Tyvek® 400 SFR garments provide only secondary flame-resistant protection and are engineered to be worn over your primary flame resistant / thermal protective garments to provide an inherent barrier against particles (down to 1.0 micron in size) while not contributing to burn injury in the event of a flash fire. They must always be worn over an appropriate primary flame-resistant garment in an environment that needs flame protection, along with other personal protective equipment that protects your face, hands, and feet. DuPont operates the thermal manikin test facility Thermo-Man®, which allows a manufacturer or end-user the ability to test and evaluate the performance of different fabric and garment systems
What is the difference between primary and secondary flame resistant (FR) garments?
Primary flame-resistant garments are designed to provide stand-alone protection from flame and arc exposures. Common examples are garments made with DuPont™ Nomex® Essential (Nomex® IIIA). Primary flame-resistant garments selected based on the hazard analysis can provide protection from burn injury in the event of an industrial fire or electric arc exposure even when worn alone.

Secondary flame-resistant garments are made with fabrics that are designed to self-extinguish with no or short after-flame once the flame/heat source is removed. Secondary flame-resistant garments are not expected to contribute to additional burn injury if exposure to heat and flame occurs when worn over an appropriate primary flame-resistant garment. Secondary flame-resistant garments like ProShield® 6 SFR, Tyvek® 400 SFR, Tychem® 2000 SFR, and Tychem® 6000 SFR are not expected to provide the wearer any protection from burn injury in the event of a flash fire when worn stand-alone without primary flame-resistant garments underneath.
Has Tyvek® 400 SFR been tested for skin irritation according to industry standards? 
The fabric used to make the Tyvek® 400 SFR coverall products as manufactured by DuPont has been tested by a third party independent lab for skin irritation and dermal sensitization following standardized test procedures and is not considered a skin irritant or contact sensitizer.
Do Tyvek® 400 SFR products contain silicone?
All DuPont Personal Protection products are manufactured under specifications that do not contain silicone, with some exceptions. Tyvek® friction-coated shoe covers or Tyvek® garments with friction-coated shoe covers might contain silicone. This includes Tyvek® styles TY122, TY121, FC450 and FC454. Additionally, Tychem® 6000 AL styles TF630 and TF640T contain a silicone valve diaphragm. End users who are consuming these styles and who have concerns about silicone contamination should conduct their own testing to ensure they are suitable for their application(s).
Is it possible to wash and re-use Tyvek® 400 SFR garments?
DuPont does not recommend washing Tyvek® 400 SFR garments for re-use. These garments are designed for limited-use. They can be worn until damaged, altered or contaminated.
Do Tyvek® 400 SFR products contain latex?
As of January 2023, all DuPont Personal Protection products are manufactured under specifications that exclude components containing natural rubber latex. Tyvek® 500, Tyvek® 600 and Tyvek® 800 styles made before January 2023 contain natural rubber latex, which may cause allergic reactions in some sensitized individuals. Anyone who begins to exhibit an allergic response during the use of DuPont products should immediately cease using these products and should report it to DuPont at +1 (888) 439-2988 so that an investigation can be initiated.
How should Tyvek® 400 SFR garments be stored?
Store Tyvek® 400 SFR garments in a cool, dark, dry location free of dirt and insects. Sunlight, ozone, high temperatures (>120° F ; 49° C), vehicle exhaust fumes, compression under heavy weights and sharp edges or projections are some conditions known to degrade the materials in these garments.

Store Tyvek® 400 SFR garments in boxes, in bags or on hangers. Never step on protective garments. Never place or store heavy objects on top of protective garments.
Will Tyvek® 400 SFR fabric burn?
When exposed to a flame, the Tyvek® 400 SFR fabric will shrink away. In the event that a flash fire occurs, Tyvek® 400 SFR garments will not contribute to additional burn injury if appropriate primary flame-resistant personal protective equipment is worn beneath. When the flame source is removed, the Tyvek® 400 SFR fabric will self-extinguish with no or short after-flame. However, garments made of Tyvek® 400 SFR must not be used alone in areas where protection from fire or electric arc is required. They are designed to be worn over primary FR garments and ensembles.
Where can I find a SDS (Safety Data Sheet) for Tyvek® 400 SFR garments?
Safety Data Sheets (SDS) are written in accordance with applicable federal regulations, 29 CFR 1910.1200, to communicate health and safety data on usage and handling of hazardous chemicals. Under this regulation, DuPont™ Tyvek®, ProShield®, and Tychem® materials and garments are defined as articles, not chemicals, and the SDS and labeling requirements in that standard do not apply.
I'm not in an environment that needs FR clothing. Can I still wear Tyvek® 400 SFR?
No; first consider standard Tyvek® 400 coveralls with comfort fit design. If Tyvek® 400 is suitable for use for the specified hazard, it should be worn.
Are Tyvek® 400 SFR garments anti-static or static dissipative ?
The substrate used to make TYVEK® 400 SFR garments is treated with a topical antistatic agent to help minimize static build up and reduce nuisance garment cling.

In situations where static dissipation level is a critical performance property, end-users should evaluate the performance of their entire ensemble as worn including outer garments, inner garments, footwear and other PPE. In order for any garment system to be static dissipative, it must be able to drain a charge buildup through proper grounding devices, such as, but not limited to, workstation grounding clips or static-dissipative floors.

Under certain conditions, such as cold and dry weather, it is possible that garments might build and discharge static electricity. Discharges are not normally dangerous except in situations where the generation of an electrical spark could ignite a flammable atmosphere or startle the wearer. When operating around flammable chemicals, take steps to eliminate potential static discharges. In these situations, suggested steps include, but not limited to, water spray, the use of an overcover, raising humidity level of the work area, use of a commercial, anti-static application coating, grounding straps on equipment and personnel, inherently static-dissipating under- and over-garments, and testing of the worker's static dissipation before entry into the classified area.

However, in the case of explosive or flammable atmospheres, even if steps are taken to manage static formation and dissipate static charge, the risk of severe injury remains if an uncontrolled or accidental ignition occurs. Do not knowingly enter an environment in which the concentration of flammable gas is within flammable or explosive limits while wearing a TYVEK® 400 SFR garment. If you determine that you are in a known flammable or explosive environment, exit immediately.
In what ways can I dispose of Tyvek® 400 SFR garments?
In the United States, if not contaminated with chemical or biological hazards, Tyvek® 400 SFR garments can be recycled for non-hazardous applications through the Tyvek® Protective Apparel Recycling Program. Contact DuPont Personal Protection Customer Service at 1-800-931-3456 for information.

Tyvek® 400 SFR garments may be landfilled or incinerated in accordance with local regulations. Uncontaminated chemical protective garments may be incinerated in a facility that is capable of handling mixtures containing plastics. Likewise, an uncontaminated chemical protective garment may be buried in a facility that accepts plastic materials.

Contaminated garments that cannot be handled safely without protective equipment must be disposed of with other hazardous wastes, either through incineration or landfill per local regulations. Before discarding, cut off a sleeve or a leg so the garments cannot be worn again as protective clothing.
What determines if the garment is contaminated ?
The decision on whether or not a garment has been contaminated is made by local managers responsible for PPE based on an analysis of the incident in which the garment was used. This analysis may include exposure time, chemicals involved, level of exposure, proximity to the actual release, tasks performed and environmental monitoring in the area in which the garment was worn. Garments that are damaged, altered or show signs of contamination, such as discoloration, odor, stiffening or cracks, should not be used.
What causes Tyvek® 400 SFR garments to discolor?
Cosmetic changes such as discoloration of Tyvek® 400 SFR fabric may occur over time. In general, discoloration may be due to an increased exposure to ultraviolet light, but can be due to excess heat, humidity, cold, and other extreme temperatures and environments. It is the user's responsibility to store garments appropriately and check garments for damage tears or wear before use.
Are NF (NAFTA sourced) option code garments TAA compliant?
DuPont garment products available with option code NF (NAFTA Sourced) are made in Mexico or the United States. These products are also TAA compliant (Trade Agreement Act).
Why isn’t there a claim made re: NFPA 2113: Standard on Selection, Care, Use, and Maintenance of Flame-Resistant Garments for Protection of Industrial Personnel Against Short-Duration Thermal Exposures from Fire for this garment?
NFPA 2113 offers guidance on the selection, care, and use of flame-resistant garments.
Do Tyvek® 400 SFR garments meet ANSI/ISEA 101 sizing standards?
Yes. DuPont™ Tyvek® 400 SFR coveralls either meet or exceed ANSI/ISEA 101 sizing standards. For specific sizing dimensions on a particular DuPont garment, please view the Product Details tab for that garment.
Why isn’t there a claim made re: NFPA 701: Standard Methods of Fire Tests for Flame Propagation of Textiles and Films for this garment?
NFPA 701 is only appropriate for textile materials used in furnishings such as curtains, draperies or window treatments; or for decorative purposes, awnings, tents, tarps and banners, this standard is not appropriate to asses “FR” performance of clothing.
What is the shelf life of Tyvek® 400 SFR garments?
DuPont is currently performing ageing tests to assess the shelf life of this garment.
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