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Expandable Braided Sleeving

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MONOFLEX® PET is an expandable braided sleeving product with excellent abrasion resistance. The particular design and expandability allows for simple and efficient installation over connectors. This cost-effective sleeving is made of polymer polyethylene terephthalate, a thermoplastic polyester, and is durable against heat operating up to 125°C. 

Currently we only offer MONOFLEX® PET for online purchase in black; however, we do manufacture a wide range of colors. If you are interested in exploring other colors or patterns for customization, please contact us for assistance. All 25 FT lengths offered online are splice-free and all ID sizes 1/2″ and smaller are offered rounded.

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Features of MONOFLEX® PET

  • Offers a high expansion ratio and excellent mechanical abrasion resistance
  • Maximum Operating Temperature: 125°C / 257°F
  • REACH and RoHS Compliant
  • Available in a large variety of colors, patterns, and custom constructions
  • UL listed under file #E118600
  • Common Applications: Automotive, Marine, Heavy Equipment, Industrial, and Electronic Wire Harness

Testing Data for MONOFLEX® PET

Abrasion ASTM D-4060 13,000 cycles
Heat Age @ 168 Hours ASTM D-3045 No Cracking, Melting, or Deformation
Low Temperature Flexibility No Cracks Below Freezing
Moisture Absorption 0.20%
Specific Gravity 1.38


Temperature Scale for MONOFLEX® PET

Maximum Operating Temperature 125°C / 257°F
Melting Point 215°C - 275°C / 419°F - 527°F


Monofilament Properties of MONOFLEX® PET

Diameter 0.010"
Tensile Strength 8.5 lbs.



The suggested application is provided by Atkins & Pearce merely as an additional tool to assist the customer in making an appropriate expandable sleeving selection. This is only provided to serve as suggestions of expandable sleeving that may be appropriate based on certain criteria and should not be relied upon as determinative or as a substitute for customer testing.

Many variables exist in a sleeve’s flexibilities, resistances, and treatment. Final sleeving product selection should always be confirmed through the customer’s own testing process to determine if a particular product is the correct choice for a particular system. Atkins & Pearce is not responsible for selections made by the customer using any of the reference material provided. For optimal performance in specific systems, we strongly recommend that customers conduct exhaustive electrical tests in their own lab and consider retaining samples for their future internal reference. The importance of expandable sleeving product testing and data validation cannot be overstated.

As the customer, you and your company are responsible for appropriately testing all Atkins & Pearce expandable sleeving used in your application and for making the final selection based upon meeting appropriate safety and electrical standards. Atkins & Pearce makes no representation or warranty, expressed or implied, at law or in equity, in respect of the information provided, including, without limitation, with respect to merchantability or fitness for any particular purpose, which representations or warranties are hereby expressly disclaimed.

Weight 10 lbs
Dimensions 5 × 5 × 5 in

1/8", 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2"


25 ft, 100 ft, 250 ft, 500 ft


Aqua, Beige, Black, Blue, Brown, Clear, Dark Purple, Fluorescent Blue, Fluorescent Orange, Forest Green, Green, Hot Pink, Mint, Light Gray, Olive Drab, Orange, Platinum Gray, Purple, Red, Rocket Red, Safety Yellow, Signal Green, Sunshine Yellow, Teal, White, Yellow

*Note: MONOFLEX® PET is currently only available for purchase online in select sizes. We also only offer our black product for purchase online currently. If you are interested in exploring our wide variety of other colors, please contact us for assistance.

Sizes Available

1/8" * 1/4" 0.025" 1,000'
1/4" * 3/8" 0.025" 1,000'
3/8" * 1/2" 0.025" 500'
1/2" * 3/4" 0.025" 500'
5/8" 1" 0.025" 250'
3/4" * 1-1/4" 0.025" 250'
1" * 1-5/8" 0.025" 250'
1-1/4" * 1-3/4" 0.025" 250'
1-1/2" * 2-1/8" 0.025" 250'
1-3/4" 2-3/4" 0.025" 250'
2" * 3-1/2" 0.025" 200'
2-1/2" 3-1/2" 0.025" 100'
3" 3-5/8" 0.025" 100'
3-1/2" 5" 0.025" 100'
*Note: MONOFLEX® PET is currently only available for purchase online in these select sizes. If you are interested in exploring an unavailable or custom size, please reach out through the below button.

MONOFLEX ®  PET Spotlight


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