Help Point Cover – Technical Data Sheet
Ronsil Special Low Combustion Flame Retardant Silicone
Rubber for Section 12 Compliant Sub Surface Stations.
Grades: 72 LCH1 – Approved Material
Product Availability and Application
Ronsil Special 72 LCH1 is available in the form of mouldings, vacuum welded jointed sheets, profile extrusions
and sheet. It is particularly suited to use in engineering applications where public safety is a main concern.
There is a wide range of standard colours available; although not all colours can be matched, Ronfell Group has
a large amount of experience at being able to produce these materials in colours that are tailored to customer
requirements.
Testing Centre – Wiratec Limited (Third Party Test House)
Material Specification
Ronsil 72 LCH1 satisfies the BS 6853:1999 requirements and meets the requirements of the LUL Code of Practice for Fire Safety (Materials use in the Underground; August 1990)
It also meets NFF 16-101 Grid 5,6,7,8,9,10,11,12,13 and 15.
Flammability Characteristic of unpigmented material
| Property | BS 6853 | 72 LCH1 |
| Temperature Index | >350°C | 357°C |
| Flame Length | <50 mm | <50mm |
| Limiting Flame | >34% | 34.7 |
Index | ||
| Ao Smoke Index | <0.02 | 0.0115 |
| Test Method | BS EN ISO 4589-3: | 1999 |
| NFF Test | NFF Test Method | 72 LCH1 |
| Smoke Index | NFX 10.702 | 6 |
| Conventional Index of Toxicity | NFX 70.100 | 2.72 |
| Class | - | F0 |
| Glow Wire Test | NFC 20.455 | Classified 12* |
*Class 12 = Oxygen limit of more than or equal to 32% and no ignition at 850°C glow wire
Grades: 72 LCH1 – Approved Material
| Property | Units | Specification | Typical Value |
| Hardness | IRHD | N/A | 75 |
| BS 903 pt A26 | |||
| Shore A | 70 ± 5 | 70 | |
| ASTM D2240 | |||
DIN 53505 | |||
| Tensile Strength | MPa | 5.5 min | 7.0 |
| BS 903 pt A2 | |||
DIN 53504 die S1 | |||
| Elongation to Failure | % | 130 min | 190 |
| BS 903 pt A2 | |||
DIN 53504 die S1 | |||
| Compression Set | % | N/A | 20 |
| BS 903 pt A6 type B | |||
| 24 hours @ 150°C | |||
| DIN 53517 type II |
Environmental Resistance –
Ronfell Group products have an excellent resistance to ozone, oxidation, ultraviolet light, corona discharge,
cosmic radiation, ionising radiation and weathering in general. Other grades of silicone rubber available from
Ronfell Group are: *General Purpose Grades * Cellular Silicone Products * High Temperature Grades
* High Tear Grades * Flame Retardant Grades * Low Combustion Hazard Grades * Custom Compounds
Strong: Protect against Dust Contamination and Extremes of Temperature : -10°C to +40°C with no Heat Build-up of Asset.
Lightweight & Tough: Resilient Cloth Material
Easy to Apply: Just slip easily over Asset at any time
Fully Compliant: Compliant to Section 12 requirements
Easy to Store: Folds up flat
Reduced Disruption to Passenger Flow: Fewer Broken Gates needing to be left open thereby reducing losses from non-paying passengers. Keeps operational efficiency of the Station.
Reduced Penalties for Damaged Assets: Fewer Damaged Assets Leased from Prestige means less compensation to pay.
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