CRN is a semi-rigid, flame-retardant, polyolefin heat-shrinkable tubing with excellent abrasion resistance, good strain relief performance, outstanding physical and electrical performance, excellent chemical and solvent resistance. CRN semi-rigid, flame retarded, polyolefin based heat-shrinkable tubing displays excellent resistance to a wide range of chemicals and solvents combined with excellent electrical properties. The tubing is tough and semi-rigid which makes it ideally suitable for applications requiring strain relief or abrasion resistance. Widely used throughout industry for component protection and strain relief of sensitive areas such as solder and crimp joints.
The CRN Raychem heat‑shrink tubing is a semi‑rigid, flame‑retarded polyolefin product offering excellent abrasion, chemical and solvent resistance. It is designed for strain‑relief and protection of sensitive components such as solder and crimp joints, and is available in a range of standard colors and sizes.
The tubing complies with UL 224, MIL‑DTL‑23053/6 and CSA LA31929 approvals, and meets performance criteria including a dielectric strength of 20 MV/m, tensile strength of 12 MPa (min) and ultimate elongation of 150‑200 % (min). Ordering information, dimensions and color codes are provided, and additional specifications are available on request.
| Operating temperature range | -55 °C to +135 °C |
|---|---|
| Minimum shrink temperature | +110 °C |
| Minimum full recovery temperature | +135 °C |
| Dielectric strength | 20 MV/m |
| Tensile strength (min) | 12 MPa |
| Ultimate elongation (heat ageing) | 150 % (min) |
| Ultimate elongation (tensile test) | 200 % (min) |
The tubing operates from –55 °C up to +135 °C.
It is approved to UL 224, MIL‑DTL‑23053/6 (Class 1 and 2) and CSA LA31929 (black only).
Standard colors are Black and Clear.
The dielectric strength is 20 MV/m.