Products
VR 70
Material
VR 70 is an asbestos-free gasket material. It is composed of aramide fibers and other asbestos substitutes that are resistant to high temperatures. These substitutes are processed with high-grade elastomers under elevated pressure and temperature.
Properties
VR 70 is an economical gasket material. It exhibits good sealability in contact with gases and fluids, combined with good conformability. The material’s thermal resistance is very good.
Application
- for sealed joints that are subjected to moderate operating pressures, e.g. in transformers, compressors, pipelines, apparatus and IC engines.
- for sealing transmission, hydraulic, refrigerating, and engine oils
- for sealing fuels, mixtures of water, antifreeze & corrosion inhibitors
- for sealing Freons, alkaline solutions and solvents
Surfaces
As standard, both sides of VR 70 are coated with a non-stick, high-friction layer that greatly facilitates disassembly. In most cases, additional surface treatment is unnecessary.
Approval
DIN-DVGW
acc. to DIN 3535, part 6 FA
Grade Y
acc. to BS 7531
Germanischer Lloyd (DNV GL)
Approval for shipbuilding
Technical Data
(nominal thickness 2.00 mm)
Density | g/cm³ | 1.9 – 2.1 |
Ignition loss acc to DIN 52 911 | % | < 25 |
Tensile strength | ||
acc. to ASTM F 152 accross grain | N/mm² | > 8 |
acc. to DIN 52 910 accross grain | N/mm² | > 6 |
Residual stress acc. to DIN 52 913 | ||
16 h, 300 °C | N/mm² | ≈ 22 |
16 h, 175 °C | N/mm² | ≈ 32 |
Compressibility and recovery | ||
acc. to ASTM F 36, procedure J | ||
compressibility | % | 7 – 15 |
recovery | % | > 50 |
Sealability against nitrogen | ||
acc. to DIN 3535, part 6 FA | mg/(s·m) | < 0.1 |
Swelling acc. to ASTM F 146 | ||
in IRM 903 Oil (replaces ASTM Oil No. 3) | ||
5 h, 150 °C | ||
increase in thickness | % | < 10 |
increase in weight | % | < 15 |
in ASTM Fuel B | ||
5 h, room temp. | ||
increase in thickness | % | < 10 |
increase in weight | % | < 10 |
in water / antifreeze (50:50) | ||
5 h, 100 °C | ||
increase in thickness | % | < 5 |
increase in weight | % | < 10 |
Short-term peak temperature | °C | 400 |
Maximum continuous temperature | °C | 250 |
Maximum operating pressure | bar | 100 |
Max. continuous temperature and max. pressure must not occur simultaneously.
Please contact us for sealing parameters.
DIN 28091-2: | ||
Cold creep εKSW | % | 7 – 12 |
Cold recovery εKRW | % | 4 – 8 |
Hot creep during service εWSW/T | % | 13 – 15 |
Hot recovery εWRW/T | % | ≈ 0.65 |
Recovery R | mm | ≈ 0.012 |
Specific leakage rate λ | mg / (s·m) | < 0.1 |
Residual surface pressure | % | > 50 |
after 1000 h (in air at 100 °C) | ||
Please contact us for sealing parameters. | ||
The data quoted above are valid for the material “as delivered” without any additional treatment. In view of the countless possible installation and operating conditions, definitive conclusions cannot be drawn for all applications regarding the behavior in a sealed joint. Therefore, we do not give any warranty for technical data, as they do not represent assured characteristics. If you have any doubt, please contact us and specify the exact operating conditions.
Form of delivery
Sheets
60” x 60”, 120″ x 60″, 180” x 60” (standard size)
Nominal thicknesses and tolerances acc. to ASTM F 104
Dimensional limits within a shipment
1/64” | +0.005”/-0.002” |
1/32” | ±0.005” |
3/64” | ±0.005” |
1/16” | ±0.008” |
3/32” | ±0.008” |
1/8” | ±0.008” |
Max. thickness variation in a sheet:
0.1 mm for sheet thickness ≤1.00 mm, and 0.2 mm for thickness >1.00 mm
Products
Download the Victor Reinz Product Catalog here.
