Gulf-O-Flex® UltraLineEngineered insulation, Middle East proven.
Next-generation pre-jacketed, UV-resistant flexible elastomeric line-set insulation - combining a closed-cell NBR/PVC foam core with a co-extruded polymeric jacket for superior outdoor protection.
Gulf-O-Flex® UltraLine is a next-generation line-set insulation combining a closed-cell NBR/PVC elastomeric foam core with a co-extruded UV-resistant polymeric jacket. It delivers superior protection against thermal loss, condensation, UV radiation, and mechanical damage, eliminating the need for field-applied coating or additional jacketing.
Engineered for extreme climates.
Four pillars define every Gulf-O-Flex® roll, sheet and tube - measured, certified and serialised.
Built around three decades of regional know-how.
Gulf-O-Flex® UltraLine is a next-generation line-set insulation combining a closed-cell NBR/PVC elastomeric foam core with a co-extruded UV-resistant polymeric jacket. It delivers superior protection against thermal loss, condensation, UV radiation, and mechanical damage, eliminating the need for field-applied coating or additional jacketing.
Designed for outdoor refrigerant and condensate lines, roof-mounted piping, and exposed installations in tropical and coastal conditions, UltraLine provides an operating temperature range of -70°C to +105°C with peaks up to 121°C. Available in ID sizes from 1/4" to 2-5/8" with wall thicknesses of 1/2", 3/4", and 1".
Why specifiers choose this grade.
- 01Co-extruded UV-resistant polymeric jacket - no field coating required
- 02Closed-cell NBR/PVC elastomeric foam core - excellent thermal performance
- 03Thermal conductivity 0.036 W/m·K (0.230 Btu·in/hr·ft²·°F) at 24°C mean
- 04UV resistance - no deterioration after 5,000 hours (ASTM G154)
- 05Water vapor permeability < 0.00 perm-in (ASTM E96)
- 0625/50 FSI/SDI rated (ASTM E84, UL 723, CAN/ULC S102.2)
- 07Operating temperature range -70°C to +105°C (peaks to 121°C)
- 08Tensile strength 1,200 psi minimum (ASTM D412)
- 09pH neutral - zero corrosion risk (DIN 1988)
- 10Dimensional stability < 7% linear shrinkage (ASTM C534)
Product close-up.


Full specifications.
Specified across critical projects.
Independently certified.
Ready to specify Gulf-O-Flex® UltraLine?
Our technical team supports sizing, BoQs, submittals and compliance documentation for projects across the GCC and beyond.
- Project-specific sizing & BoQ
- Submittals & compliance dossiers
- Site visits & installer training
- Sample dispatch within 48 hours
