OBO Pyromix Mortar Insulation tested as per IS 12458
IS 12458 Test Compliance
OBO Bettermann India is proud to announce the successful fire resistance testing of its Pyromix Mortar Insulation, a through-penetration firestop system, in accordance with Indian Standard IS 12458. This rigorous test was conducted at an NABL-accredited laboratory, under the ISO/IEC 17025 framework, and certified by a third-party inspection agency.
The test results confirm that Pyromix complies with the stringent requirements for horizontal and vertical fire-stopping applications, including wall and floor-ceiling assemblies, ensuring critical protection in buildings during fire incidents.
Why IS 12458 Matters
Fire sealant testing to IS12458 ensures suitability to Indian buildings and climatic conditions, offering performance reliability beyond international benchmarks:
- Tested for Indian Conditions
Conducted in an NABL-accredited Indian facility, the test confirms the product's compatibility with India's unique building designs and tropical climate. - Higher Fire Temperature Rating
IS 12458 demands a temperature of 1049°C for a 2-hour fire rating, compared to 1010°C under UL 1479, ensuring higher heat resistance. - Stricter Hose Stream Test
IS 12458 requires a 20 mm nozzle in the Hose Stream Test for added pressure, while UL 1479 uses a 29 mm nozzle, making the Indian standard more rigorous. - Flame Integrity through Cotton Wool Pad Test
IS 12458 mandates passing the cotton wool pad test to ensure flame integrity— a requirement not present in UL 1479.
These factors confirm that OBO’s firestop solutions exceed global expectations and deliver robust protection to safeguard lives and infrastructure.
About Product - Pyromix Mortar Insulation
Pyromix is a high-performance firestop mortar composed of 10–25% Portland Cement, 2.5–10% Perlite, Phyllosilicates and additives. When mixed with water, it forms a highly durable fire sealant for cut-outs and penetrations in walls and floors.
Key Product Features
- Fire-rated up to 240 minutes
- IS 12458 tested with third-party certification
- Complies with EN 1366-3, EN 13501-2
- Seals cable, pipe, and support systems (excluding hollow-core conductors)
- Suitable for steel, aluminium, and plastic profiles
- Weather-resistant – ideal for exposed outdoor applications
- Easy to install, including retrofit use due to its porous consistency
Product Applications
Pyromix is ideal for sealing penetrations in:
- Commercial and industrial buildings
- Vertical shafts (fire, plumbing, electrical)
- External walls and terraces
- DG rooms and substations (for cable trench protection)
Technical Data Sheet
Sl. No. | Characteristics | Technical Details |
| 1 | Product Name / Code | MSX-S1 (20kg), MSX-E1 (10kg) |
| 2 | Type | Mortar-based Firestop |
| 3 | Testing Standard | IS: 12458 (Third-party inspected) |
| 4 | Other Standards Compliance | EN 1366-3, EN 13501-1, ETA-17/0472 |
| 5 | Colour | Gray |
| 6 | Appearance | Fine powder |
| 7 | Dry Bulk Density | Approx. 900 kg/m³ |
| 8 | General Dust Threshold Value | 1.25 Angstrom |
| 9 | Toxicity | Non-toxic, Asbestos-free |
| 10 | Combustibility | Non-combustible |
| 11 | Compressive Strength | M 2.5 |
| 12 | pH Value | ≥ 7 |
| 13 | Setting Time | 1 hour |
| 14 | Fire Resistance Rating | 120 minutes & 240 minutes |
| 15 | Compound | Single-component, pre-mix |
| 16 | Oil Resistance | Excellent |
| 17 | Thermal Conductivity | ≤ 0.25 W/m·K (P=50%), ≤ 0.27 W/m·K (P=90%) |
| 18 | Resistance to Rain, UV Rays, and Frost | Excellent |
| 19 | Resistance to Ageing | Excellent |
| 20 | Recommended Thickness | As per NBC of India 2016, Part 4, Annexure “C” |
| 21 | Coverage | Covers up to 1m x 2m area |
| 22 | Drying/Curing Time | To touch: within 6 hours; Hard dry: 3–4 days; Full cure: 28 days |
| 23 | Packaging | 20kg bags and 10kg buckets |
| 24 | Mode of Application | Troweled manually or applied using a pump |
| 25 | Shelf Life | Minimum 12 months (unopened, stored in cool, dry place) |
| 26 | Storage Temperature | 4°C to 50°C |
| 27 | Life Expectancy | More than 10 years |
Trust in Safety. Trust in OBO.
With Pyromix Mortar Insulation, OBO Bettermann India delivers a firestop solution engineered for Indian buildings, ensuring unmatched protection, compliance, and peace of mind.