Complete AC Pipe Insulation Kit — Self-Seal, Tape & Adhesive

Everything you need to insulate a standard domestic AC installation in one kit — K-FLEX ST self-seal pipe insulation, vapour barrier tape and K-420 contact adhesive.

This kit includes insulation, tape and adhesive — select your pipe size and wall thickness below.

• ✔ K-FLEX ST Self-Seal Pipe Insulation — Class O, 2m lengths, self-adhesive seam
• ✔ K-FLEX ST Insulation Tape 50mm x 15m — seals joints, fittings and cut ends
• ✔ K-FLEX K-420 Contact Adhesive 250ml — bonds insulation on bends and fittings

Step 1: Select Pipe Size & Wall Thickness

Choose the bore size to match your copper pipe OD and the wall thickness for your application using the dropdowns above.

• 9mm wall — standard domestic AC applications
• 13mm wall — recommended for most AC installations (most common)
• 19mm wall — refrigeration and low temperature systems
• 25mm+ — commercial and high-specification applications

Step 2: Complete Kit Included Below

Tape and adhesive are automatically included with your insulation — no need to add anything else.

Why Buy as a Kit?

Most AC installations require all three products. Self-seal insulation handles the pipe run, tape seals every joint and cut end, and K-420 adhesive bonds insulation on bends, tees and complex fittings. Buying separately risks arriving on site without a critical component. Buying as a kit ensures you have everything needed for installation and avoids missing components on site.

Typical Usage

This kit is designed for a standard single indoor AC unit installation. For multi-unit systems or longer pipe runs, additional insulation or tape may be required — consider ordering two kits or adding extra insulation lengths separately. Many installers keep a spare kit on hand for additional units or unexpected pipe runs.

What’s Included

• K-FLEX ST Self-Seal Pipe Insulation — select your bore size and wall thickness above. Class O fire-rated closed-cell elastomeric foam, 2m lengths with self-seal adhesive seam. No adhesive required on straight runs.
• K-FLEX ST Insulation Tape 50mm x 15m — self-adhesive vapour barrier tape for sealing all joints, fittings and cut ends. One roll per system.
• K-FLEX K-420 Contact Adhesive 250ml — manufacturer-recommended contact adhesive for bonding insulation on bends, tees and complex connections. 250ml is sufficient for a typical domestic installation.

Technical Specifications

Also Available

• Armaflex EVO Pipe Insulation Coil — for bulk and commercial installations requiring longer runs
• Armaflex EVO Tuffcoat — for underground and external pipe runs

In stock for fast UK dispatch — ready for next-day installation jobs.

Order your complete AC pipe insulation kit today — available from UK stock with fast trade delivery.