Rubber DP SpongeCote® by Wearwell Anti Fatigue Floor Mats

Starting At $70.71 Regular Price $88.39

Rubber DP elevates Diamond-Plate to the next level of resilience, traction, and ergonomics. More traction prevents slips; chemical resistant surface means a longer life, and an ignition point of over 500 degrees means deflected sparks and shards for welding.

Wearwell’s specially created Nitricell ergonomic sponge helps standing workers maintain more energy on the job. Did you know that anti-fatigue floor mats are proven to reduce injuries and support an overall increase in worker productivity? By itself, a great reason to invest in anti-fatigue flooring.

  • Best Nitricell Sponge for anti-fatigue and ergonomic support
  • Excellent choice for welding workstations, welding pads, splatter mats
  • Durable - ignition point of over 500⁰ Fahrenheit
  • Specially compounded SBR rubber surface for heat and spark resistance
  • Unparalleled traction and comfort
  • Beveled edges ensures the mat lays flat for added safety
  • NFSI Certified (National Floor Safety Institute)
  • Available in 7/8" (2.25 cm) and 9/16" (1.43 cm) thick

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Putting Together Wearwell Part Numbers
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Size Color Sku Price
2' x 3' x 7/8" Black ML446.78x2x3BK $139.90
2' x 3' x 9/16" Black ML446.916x2x3BK $88.39
Parameters of Category: Specifications - General
TypeAnti-Fatigue Matting
Customization Level
Solid or DrainageSolid
CompoundNatural rubber/nitrile infused sponge blend
Warranty4 Years
Test Specification & Results
PropertyTest / Result
Flammability MVSS 302 / 'A'; Rating.
Taber Abrasion Federal Standard 191 / 1.7% lost @ 1,000 cycles
Temperature Range FMVSS302 Pass (se) 500 F Melt Point
Coefficient of Friction ASTM F1677 / Dry: COF = 1.1+ / Wet COF = .89
Compression Deflection ASTM D575 / Deflection @ 25% - Ultra 6.94, Standard, 7.46
Tear Strength Not Applicable
ESD Rating Not Applicable
Dielectric Strength Not Applicable


  • A = Performs well
  • B = Slightly affected
  • C = Moderately affected
  • D = Highly affected
  • U = Not recommended
  • NT = Not tested
Chemical Urethane Nitrile PVC CFR SBR Natural Rubber
Acetone U U U C C C
Animal Fats NT A C U U U
Bleach Solution (10% Dilute) NT B B C C C
Boric Acid B A A A A A
Brake Fluid U A B D D D
Brake Fluid (Silicone Based) U A B A B B
Chlorine Solution (3% Dilute) C A B C C C
Citric Acid NT A C C C U
Cutting Fluid (Mineral Oil Based) U B B B C D
Diesel Oil U A B U U U
Ethylene Acetate NT U NT U U U
Ethylene Glycol B A A A A A
Hydraulic Oil (Petroleum) U A B D D D
Hydrochloric Acid Cole (37% Dilute) U C C B B B
Isopropyl Alcohol A B A B B A
Lacquer Solvents U U U U U U
Lindol (Hydraulic Fluid) NT U NT U U U
Mineral Oil C A B A B U
Naptha NT C U U U U
Napthlene U U U U U U
Petroleum U C B D D D
Salt Water A A B B B C
Tolulene U U U U U U
Transmission Fluid (Type A) U B A C U U
Trichloroethane U U U U U U
Vegetable Oil C A B C C C
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Q: What is an NFSI Certification?

A: These products have been tested by the National Floor Safety Institute per the NFSI 101-C Test Method and have passed the NFSI “High-Traction” standard.

Q: What are the benefits of using anti-fatigue floor mats?

A: Anti-fatigue mats are designed to offer a wide range of benefits to employees and employers. Anti-Fatigue floor mats can increase worker productivity, reduce slips, trips and falls and improve the overall health of your employees.

Q: How do anti-fatigue mats improve overall health of my employees?

A: Standing long-term, especially on hard, unforgiving concrete leads to lower back pain, swelling of joints and poor circulation that can lead to varicose veins. Standing on anti-fatigue matting allows for continuous muscle movement which leads to increased blood flow to the legs, feet and back. Continuous blood circulation reduces fatigue, alleviates back pain and reduces swelling.

Q: How do anti-fatigue mats increase employee productivity?

A: Fatigue eventually leads to lack of focus and concentration on the task at hand. Anti-fatigue mats reduce worker fatigue allowing them to remain focused on the job at hand.

Q: Can WeldSafe mats be exposed to liquids?

A: WeldSafe mats were designed to be placed in dry work centers or work centers with minimal overspray. The sponge on the underside of your mat can absorb fluids it comes in contact with causing the mat to wear out prematurely.

Q: How do I clean my WeldSafe mat?

A: Sweep regularly or dry-mop the surface. These mats can be wet-mopped with mild soap or detergent. For best results, use a detergent with a pH between 4 and 9.

Q: Can I cut or modify my mat?

A: We do not recommend that you cut or modify your mat in any way. In fact, cutting the mat yourself will void the warranty. We offer our WeldSafe matting in 1ft cut lengths so you can order any length of matting that you need. We also customize matting if you require a unique shape or configuration.

Q: Can you customize a mat to my specific requirements?

A: Yes we can. We offer 3 types of customization:

  • C1- Custom lengths
  • C2- Custom lengths and widths
  • C3- Fully custom (size & shape)

  • The level of customization by product is on the details tab at the bottom of every product page.

    Q: There 2 sides to my mat. Which side do I stand on?

    A: The top side of the mat is the side with the pebbled texture pattern. The Sponge side of the mat touches the floor.

    Q: I just took my mat out of the box and laid it on the floor and the edges aren't lying flat.

    A: Please allow the mat to acclimate to the environment for 24-48 hours. Once it has acclimated the edges will lay flat.

    Q: Are the colors shown on your website the exact color I should expect to receive?

    A: No, because monitors vary so there may be a slight variance in the color. If color choice is critical, we suggest that you order a sample. Due to manufacturing processes and material dye lots, color can vary, but our products fall within an industry-standard acceptable variation.

    Q: Does this mat pose a tripping hazard?

    A: Our WeldSafe mats are machined beveled (sloped edge) on all four sides. This allows for a smooth transition on and off the mat and do not pose a tripping hazard.