4:1 High Shrink Ratio, Highly Flexible Flame Retardant Heat Shrink Tubing


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High Shrink Ratio, Highly Flexible Flame Retardant Polyolefin Tubing

4:1 Shrink Ratio

Manufactured with specially developed formulation and technology, it can easily fit over a large diameter connector or transition and shrink down onto a smaller diameter jacket. Because of its outstanding physical, chemical, and electrical properties its widely used in some important fields such as military, aerospace and fine electronic instruments for insulating or repairing harnesses, cables and connectors.

Operating temperature: -55°C to +135°C
Minimum shrink temperature: 70°C
Full recovery temperature: 100°C
Approval: UL File No. E236137, CSA File No. 242540, 125°C, VW-1, 600V
Meets: SAE-AMS-DTL-23053/5 Class 1 & 3, Sony-SS-00259
Standard color: Black
Special colors: Red, blue, yellow, green
UV Resistant
RoHS Compliant



Additional information




As Supplied ID (min)

Recovered ID (max)

Recovered Wall Thickness


Min Operating Temperature (°C)

Max Operating Temperature (°C)

Military Specification


Shrink Ratio


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Print Certificates

March 21, 2023

Certificate of RoHS Compliance

Qualtek Electronics certifies the following part number Q2-F4X-2-01-QB48IN-5 is RoHS Compliant 2011/65/EU Ammended to 2015/863/EU

Certificate of REACH Compliance

We, Qualtek Electronics Corporation, declare that the following part number Q2-F4X-2-01-QB48IN-5 does not contain any SVHC substances listed in ECHA’s website: http://echa.europa.eu/chem_data/authorisation_process/candidate_list_table_en.asp of January 2023 in concentrations greater than 0.1% (w/w), and does not contain any substances as described in Annex XVII.

California Proposition 65 Information Can be found at:

Prop 65 Statement

Qualtek Electronics • 7610 Jenther Drive • Mentor, OH 44060 USA