3:1 Medium Wall Polyolefin Heat Shrink Tubing with Black Mastic Sealant

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Medium Wall, Polyolefin Tubing with Black Mastic Sealant

3:1 Shrink Ratio

QRS tubing is mastic lined heat shrinkable tubing designed specially for protecting metal pipe joints, soil nails and any other connectors requiring environmental sealing. The radiation cross linked jacket provides effective mechanical protection and mastic layer provides excellent water and moisture proof.

Operating temperature: -35°C to +110°C
Minimum shrink temperature: 100°C
Full recovery temperature: 120°C
Standard color: Black
Resistant to UV radiation
High electrical insulation
RoHS Compliantt



Additional information




As Supplied ID (min)

Recovered ID (max)

Recovered Wall Thickness


Min Operating Temperature (°C)

Max Operating Temperature (°C)


Shrink Ratio


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Print Certificates

December 9, 2022

Certificate of RoHS Compliance

Qualtek Electronics certifies the following part number QRS-300/85-01-QB48IN-1 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 QRS-300/85-01-QB48IN-1 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 June 2022 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