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AEROFLEX elastomeric tube insulation

Aeroflex

AEROFLEX elastomeric tube insulation

Elastomeric tube insulation for central-plant chilled-water pipes and split-type refrigerant lines — reduces cooling loss and prevents condensation; also for hot-water pipes up to 125 °C.

Thickness
6–50 mm
Thermal conductivity (λ)
0.033 / 0.035 / 0.038 W/m·K at 0 / 24 / 40 °C mean · ASTM C177, ASTM C518, ISO 8497
Service temperature range
-57 – 125 °C

Choose pipe size and thickness

1. Choose by

The maker states 14 steel pipe sizes. For copper or other pipes, choose by bore or send us your pipe size on LINE.

3. Insulation thickness

Your selection

AEROFLEX Bore 7/8" · 19 mm thick

Availability: Please enquire

Tube bore (ID)
7/8" · 22 mm
Fits
steel pipe 1/2"
Insulation thickness
19 mm (3/4")
Pack
20 tubes / carton
Request a price for this size
Tube length, metres per carton and maker code
Metres per carton
36.6 m
Length per tube
1.83 m
Manufacturer code
3478

See all models and sizesManufacturer documentsTechnical specifications

Product details

Pipe insulationElastomeric rubber foamAeroflex

Closed-cell EPDM elastomeric foam, pre-formed tube

Thickness
6–50 mm
Thermal conductivity (λ)
0.033 / 0.035 / 0.038 W/m·K at 0 / 24 / 40 °C mean · ASTM C177, ASTM C518, ISO 8497
Service temperature range
-57 – 125 °C

What is it?

AEROFLEX tube is closed-cell EPDM elastomeric insulation for chilled-water and refrigerant pipes. It reduces cooling loss and prevents condensation, and can be used on hot-water pipes up to 125 °C, indoors and out. The flexible tube is talc-coated inside: slide it onto new pipes, or slit and glue it on existing ones.

What is it made of?

Elastomeric rubber foam · Tube

Which sizes are available?

Thickness 6–50 mm — Choose pipe size and thickness

Where does the data come from?

AEROFLEX brochure (2024) — standard packing table p.7

Technical data from the manufacturer's documents Aeroflex · Checked 26 Sept 2026

Technical specifications

All values come from the manufacturer's documents, with conditions and test standards. Values the documents do not state are not shown.

PropertyValueConditions / standardSource
Tube inside diameter6 – 165 mm1/4" – 6-1/2" (see the size table in the brochure)AEROFLEX brochure (2024) — standard packing table p.7, p. 3
Thermal conductivity (λ)0.033 / 0.035 / 0.038 W/m·Kat 0 / 24 / 40 °C mean · ASTM C177, ASTM C518, ISO 8497AEROFLEX brochure (2024) — standard packing table p.7, p. 3
Density40 – 80 kg/m³under 25 mm thick: 48–80 · ASTM D1667AEROFLEX brochure (2024) — standard packing table p.7, p. 3
Service temperature range-57 – 125 °C—AEROFLEX brochure (2024) — standard packing table p.7, p. 3
Reaction to fireV-0UL 94AEROFLEX brochure (2024) — standard packing table p.7, p. 3
Reaction to fire25/50flame spread / smoke developed · ASTM E84AEROFLEX brochure (2024) — standard packing table p.7, p. 3
Water vapour permeability< 0.10 perm·inASTM E96AEROFLEX brochure (2024) — standard packing table p.7, p. 3

Models and sizes available

The maker lists 240 sizes across 8 thicknesses. Open a thickness to see its bores. Full size table from the maker (PDF)

6 mm (1/4")14 sizes · bore 1/4"–1-7/8" (6–48 mm)

1/4"3/8"1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"

9 mm (3/8")33 sizes · bore 1/4"–6-1/2" (6–165 mm)

1/4"3/8"1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

13 mm (1/2")33 sizes · bore 1/4"–6-1/2" (6–165 mm)

1/4"3/8"1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

19 mm (3/4")33 sizes · bore 1/4"–6-1/2" (6–165 mm)

1/4"3/8"1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

25 mm (1")33 sizes · bore 1/4"–6-1/2" (6–165 mm)

1/4"3/8"1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

32 mm (1-1/4")32 sizes · bore 3/8"–6-1/2" (10–165 mm)

3/8"1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

38 mm (1-1/2")31 sizes · bore 1/2"–6-1/2" (13–165 mm)

1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

50 mm (2")31 sizes · bore 1/2"–6-1/2" (13–165 mm)

1/2"5/8"3/4"7/8"1"1-1/8"1-1/4"1-3/8"1-1/2"1-5/8"1-3/4"1-7/8"2"2-1/8"2-1/4"2-3/8"2-1/2"2-5/8"2-7/8"3"3-1/8"3-1/4"3-1/2"3-5/8"3-7/8"4"4-1/8"4-1/2"5-1/8"5-1/2"6-1/2"

Sizes, lengths and carton quantities follow the manufacturer's table (packing may change). Please confirm your pipe size before ordering.

Applications

PipesAC, chilled-water, hot-water and steam pipesAir-conditioning (HVAC)Ducts, refrigerant lines and HVAC noise

Highlights

  • Closed-cell EPDM
  • For cold lines and hot lines up to 125 °C
  • Many wall thicknesses and pipe sizes

Installation overview

  1. New pipes: slide the tube on before connecting
  2. Existing pipes: slit the tube lengthwise and glue the seam with elastomeric adhesive
  3. Seal joints with the adhesive and tape the maker recommends

Always follow the manufacturer's installation and safety instructions.

Manufacturer documents

AEROFLEX brochure (2024) — standard packing table p.7PDF · Aeroflex Co., Ltd. · TH

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