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ROCKWOOL

ROCKWOOL ProRox PS 960 SA / PS 970 SA stone wool pipe sections

Split-and-hinged stone-wool pipe section for high-temperature industrial pipework under mechanical load, up to 650 °C.

Thickness
50–100 mm
Maximum service temperature
650 °C both PS 960 SA and PS 970 SA · ASTM C447
Thermal conductivity (λ)
0.037–0.038 W/m·K at 50 °C mean · ASTM C335

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1. Choose the model (density)
2. Choose the thickness
3. Choose the bore (inside diameter)
4. Facing (foil or unfaced)

Foil facing is offered for some models and sizes only; we confirm what can be supplied together with the price.

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Product details

Pre-formed stone wool pipe sections with WR-Tech · 120 / 150 kg/m³ · up to 650 °C

Thickness
50–100 mm
Maximum service temperature
650 °C both PS 960 SA and PS 970 SA · ASTM C447
Thermal conductivity (λ)
0.037–0.038 W/m·K at 50 °C mean · ASTM C335

What is it?

ProRox PS 960SA is a mandrel-wound stone-wool pipe section made with the water-repellent WR-Tech binder to reduce the risk of corrosion under insulation (CUI). Supplied split and hinged for snap-on fitting, it is used for thermal and acoustic insulation of industrial pipework. Maximum use temperature is 650 °C, reaction to fire is Euroclass A1, and it meets ASTM C795 for use over stainless steel.

What is it made of?

Stone wool (rock wool) · Facing: Unfaced (reinforced aluminium foil facing on request) · Pipe section

Which sizes are available?

Thickness 50–100 mm — Choose a size

Limitations to know

Insulation thickness must be designed for pipe temperature, target surface temperature and heat loss. High-temperature work should be designed and installed by specialists, and the sections must be finished with metal cladding.

Where does the data come from?

ProRox PS 960 SA — 200 329TH-08/25 V4 (EN) · ProRox PS 970 SA — 200 334TH-08/25 V3 (EN)

Technical data from the manufacturer's documents ROCKWOOL · Checked 13 Oct 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
Maximum service temperature650 °Cboth PS 960 SA and PS 970 SA · ASTM C447ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Density120–150 kg/m³nominal density · ASTM C302ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ)0.037–0.038 W/m·Kat 50 °C mean · ASTM C335ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Thermal conductivity (λ) PS 960 SA0.037 / 0.042 / 0.048 / 0.055 / 0.063 / 0.072 / 0.083 W/m·Kat mean temperature 50 / 100 / 150 / 200 / 250 / 300 / 350 °C · ASTM C335ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), p. 1
Thermal conductivity (λ) PS 970 SA0.038 / 0.043 / 0.048 / 0.055 / 0.063 / 0.072 / 0.082 W/m·Kat mean temperature 50 / 100 / 150 / 200 / 250 / 300 / 350 °C · ASTM C335ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Reaction to fireEuroclass A1 · ASTM E84 passed (flame spread / smoke development)EN 13501-1 / ASTM E84ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Use over stainless steelMeets ASTM C795 · leachable chloride ≤ 10 ppmASTM C692 / C871 / C795ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Water absorption≤ 0.2 kg/m²also after 24 h pre-heating at 250 °C · EN 13472ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), ProRox PS 970 SA — 200 334TH-08/25 V3 (EN), p. 1
Vapour sorptionless than 1% by weightASTM C1104ProRox PS 960 SA — 200 329TH-08/25 V4 (EN), p. 1

Models and sizes available

ModelThickness (mm)Length (mm)Pipe sizeNote
PS 960 SA501200bore 34 mm—
PS 960 SA501200bore 90 mm—
PS 960 SA1001200bore 115 mm—
PS 960 SA1001200bore 275 mm—
PS 970 SA501200bore 115 mm3 pcs / carton
PS 970 SA501200bore 275 mm—
PS 970 SA501200bore 326 mm—
PS 970 SA501200bore 358 mm—
PS 970 SA1001200bore 221 mm—

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Applications

Highlights

  • Max. use temperature 650 °C
  • Euroclass A1
  • Suitable over stainless steel (ASTM C795)

Installation overview

  1. Fit closely around the pipe with the lengthwise joint underneath; stagger joints
  2. Secure with galvanised binding wire per the manufacturer; thick or high-temperature work in staggered multiple layers
  3. Finish with metal (e.g. aluminium) cladding and provide expansion joints where needed

Always follow the manufacturer's installation and safety instructions.

Manufacturer documents

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