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ROCKWOOL ProRox BL industrial stone wool blanket

ROCKWOOL

ROCKWOOL ProRox BL industrial stone wool blanket

ROCKWOOL stone wool blankets for non-vibrating industrial equipment and large vessels, easy to fit on curved surfaces, in three grades rated 350–650 °C.

Thickness
25–100 mm
Density
60–100 kg/m³
Maximum service temperature
350–650 °C ASTM C411 / C447

Choose model and size

1. Choose thickness
2. Choose model (density)
3. Facing (foil or unfaced)

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

Your selection

ROCKWOOL ProRox BL 958 SA · Thickness 50 mm

Availability: Please enquire

Roll size (width × length)
600 × 5,000 mm60 × 500 cm
Pack
1 roll(s) / pack
Area per pack
3.00 m²
Density
80 kg/m³
Request a price for this size
Technical values for BL 958 SA
Maximum service temperature
450 °C
Thermal conductivity (λ)at 50 °C mean
0.039 W/m·K

See all models and sizesManufacturer documentsTechnical specifications

Product details

Industrial and high-temperature insulationStone wool (rock wool)ROCKWOOL

Stone wool blankets for equipment and large vessels · 3 grades, 60–100 kg/m³

Thickness
25–100 mm
Density
60–100 kg/m³
Maximum service temperature
350–650 °C ASTM C411 / C447
Thermal conductivity (λ)
0.039–0.041 W/m·K at 50 °C mean · ASTM C177

What is it?

ProRox BL is a stone wool blanket for non-vibrating industrial equipment such as tanks and large vessels. BL 938 SA (60 kg/m³) is rated up to 350 °C, BL 958 SA (80 kg/m³) up to 450 °C and BL 960 SA (100 kg/m³) up to 650 °C according to ROCKWOOL Thailand data sheets.

What is it made of?

Stone wool (rock wool) · Blanket

Which sizes are available?

Thickness 25–100 mm · 60–100 kg/m³ — Choose model and size

Limitations to know

The manufacturer specifies these blankets for non-vibrating equipment; for vibrating equipment consider the wired mat (ProRox WM).

Where does the data come from?

ProRox BL 958 SA — 200 359TH-08/25 V4 (EN) · ProRox BL 960 SA — 200 352TH-08/25 V4 (EN) · ProRox BL 938 SA — 200 350TH-08/25 V4 (EN)

Technical data from the manufacturer's documents ROCKWOOL · Checked 13 Oct 2026

Technical specifications

Technical values for each model from the manufacturer's data sheet. They apply to every thickness of that model unless a condition is given.

BL 938 SA

Density
60 kg/m³
Maximum service temperature
350 °C
Densitynominal density
60 kg/m³
Thermal conductivity (λ)at 50 °C mean
0.039 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean
0.047 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean
0.057 W/m·K

BL 958 SA

Density
80 kg/m³
Maximum service temperature
450 °C
Densitynominal density
80 kg/m³
Thermal conductivity (λ)at 50 °C mean
0.039 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean
0.046 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean
0.054 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean
0.064 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean
0.075 W/m·K

BL 960 SA

Density
100 kg/m³
Maximum service temperature
650 °C
Densitynominal density
100 kg/m³
Thermal conductivity (λ)at 50 °C mean
0.041 W/m·K
Thermal conductivity (λ) at 100 °Cat 100 °C mean
0.049 W/m·K
Thermal conductivity (λ) at 150 °Cat 150 °C mean
0.057 W/m·K
Thermal conductivity (λ) at 200 °Cat 200 °C mean
0.066 W/m·K
Thermal conductivity (λ) at 250 °Cat 250 °C mean
0.074 W/m·K
Thermal conductivity (λ) at 300 °Cat 300 °C mean
0.083 W/m·K

All models

Reaction to fire
Euroclass A1 · ASTM E84 passed (flame spread / smoke development) all models (same in each model's data sheet)
Linear shrinkage
less than 2% (at max. service temperature)
Chloride / use over stainless steel
less than 10 ppm · conforms to ASTM C795
Moisture absorption
less than 1% by weight
Water absorption
< 1 kg/m²
Test standards and sources

Models and sizes available

Roll sizes 60 × 500 cm, 60 × 300 cm, 60 × 200 cm, 60 × 400 cm · thicknesses 25, 50, 60, 75, 100 mm. Sizes differ by model — all are listed below.

BL 938 SA · 60 kg/m³

Blanket for non-vibrating equipment up to 350 °C

Thickness 50 mm

  • 600 × 5,000 mm60 × 500 cm 1 roll(s) / pack3.00 m²/packPlease enquire Ask price

Thickness 75 mm

  • 600 × 3,000 mm60 × 300 cm 1 roll(s) / pack1.80 m²/packPlease enquire Ask price

Thickness 100 mm

  • 600 × 2,000 mm60 × 200 cm 2 roll(s) / pack2.40 m²/packPlease enquireDistributor listing Ask price

BL 958 SA · 80 kg/m³

Blanket for non-vibrating equipment up to 450 °C

Thickness 25 mm

  • 600 × 5,000 mm60 × 500 cm Please enquireDistributor listing Ask price

Thickness 50 mm

  • 600 × 5,000 mm60 × 500 cm 1 roll(s) / pack3.00 m²/packPlease enquire Ask price

Thickness 75 mm

  • 600 × 3,000 mm60 × 300 cm 1 roll(s) / pack1.80 m²/packPlease enquire Ask price

Thickness 100 mm

  • 600 × 2,000 mm60 × 200 cm 2 roll(s) / pack2.40 m²/packPlease enquire Ask price

BL 960 SA · 100 kg/m³

Up to 650 °C

Thickness 25 mm

  • 600 × 5,000 mm60 × 500 cm Please enquireDistributor listing Ask price

Thickness 50 mm

  • 600 × 5,000 mm60 × 500 cm 1 roll(s) / pack3.00 m²/packPlease enquire Ask price

Thickness 60 mm

  • 600 × 4,000 mm60 × 400 cm 1 roll(s) / pack2.40 m²/packPlease enquire Ask price

Thickness 75 mm

  • 600 × 3,000 mm60 × 300 cm 1 roll(s) / pack1.80 m²/packPlease enquire Ask price

Thickness 100 mm

  • 600 × 2,000 mm60 × 200 cm Please enquireDistributor listing Ask price

Pack quantities are based on sales information in Thailand. Please confirm the pack contents before ordering. Area per pack = roll size × rolls per pack.

Applications

FactoriesFactory roofs, machine noise and hot pipework

Highlights

  • Long rolls, easy to fit on tanks and curved surfaces
  • Max. service temperature 350 / 450 / 650 °C by grade
  • Euroclass A1, non-combustible
  • Low chloride, suitable over stainless steel (ASTM C795)

Manufacturer documents

ProRox BL 938 SA — 200 350TH-08/25 V4 (EN)PDF · ROCKWOOL (Thailand) · ENProRox BL 958 SA — 200 359TH-08/25 V4 (EN)PDF · ROCKWOOL (Thailand) · ENProRox BL 960 SA — 200 352TH-08/25 V4 (EN)PDF · ROCKWOOL (Thailand) · ENROCKWOOL Thailand product page — ProRox BL 938 (product variant table)Web page · ROCKWOOL (Thailand) · THROCKWOOL Thailand product page — ProRox BL 958 (product variant table)Web page · ROCKWOOL (Thailand) · THROCKWOOL Thailand product page — ProRox BL 960 (product variant table)Web page · ROCKWOOL (Thailand) · TH

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