Function of any hydraulic, pneumatics systems depends on the performance of the soft material parts such as O-rings, hydraulic seals, U-cups seals, piston cup seals, square section seals, Quad ring seals, Vee packings, wipers, lathe cuts, FKM / Viton Seals, , Teflon oil seals, Mechanical shaft seals, Bearing guards, flat seals, Rubber gaskets, Cork Gaskets, Rubber-Cork gaskets etc. Maeon Laboratories perform precise testing and provide customer the valuable data of the Seals testing, O Ring testing, gasket testing for their analysis.
O-Rings - Testing
The key tests for O Ring are listed in ASTM D1414 and the same is listed here for ready reference. Testing of the customers O ring to evaluate the performance is done Maeon Laboratories
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Tensile Strength |
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Elongation |
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Tensile Stress |
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Tension Set |
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Compression Set |
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Compression Set in liquids |
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Low Temperature Test |
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Density |
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Immersion Test : Volume Change |
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Heat Ageing, Change in H, TS & El |
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Hardness |
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Corrosion Test |
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Stress-Strain Property Test
The Tensile strength of O rings is the force required to rupture when subject to stretch at a constant rate. Tensile strength is measured in psi (pounds per square inch) or MPa (Mega Pascals). Special mounting devices are used by Maeon laboratories for testing O Rings. The Elongation at break, Tensile stress (Modulus ) measurements are done in a single test.
| SG1OR-1 |
Tensile Strength |
ASTM D1414 Cl 8 |
| SG1OR-2 |
Elongation |
ASTM D1414 Cl 8 |
| SG1OR-3 |
Tensile Stress |
ASTM D1414 Cl 8 |
Permanent Set Property Test
Tension and Compression set are key characteristic in the performance of O Rings and seals, and is generally determined in air aging and reported as the percent of deflection the seal cross section fails to recover after a fixed time under specified squeeze and temperature. Zero percent (0%) indicates no relaxation has occurred whereas 100% indicates total relaxation; the seal just contacts mating surfaces but no longer exerts a force against those surfaces.
Compression set tests for seals and O rings are mainly applicable for materials, components and products which will be used in conditions involving static stresses, and for use in both an air or liquid environment. A constant strain is applied and the set is determined.
| SG1OR-4 |
Tension Set |
ASTM D1414 Cl 9 |
| SG1OR-5 |
Compression Set |
ASTM D1414 Cl 10 |
| SG1OR-6 |
Compression Set in liquids |
ASTM D1414 Cl 11 |
Thermal Property Test
Maeon Laboratories conduct the test to determine the lowest temperature at which rubber compounds seal or O ring will not show fractures when exposed to specified bending or impact conditions.
During heat ageing of O rings and seals, they are exposed to hot surrounding air over a predefined constant temperature. This process takes place either with several samples in a kind of circulating air oven with fresh air supply or in cell ovens separated into samples and % deterioration of properties or change in hardness is reported.
| SG1OR-7 |
Low Temperature Test |
ASTM D1414 Cl 12 |
| SG1OR-10 |
Heat Ageing, Change in H, TS & El |
ASTM D1414 Cl 15 |
Material Property Test
IRHD hardness – Macro or Micro with O ring centralizing device is used to measure Hardness of curved products. Maeon Laboratories have facility for testing hardness by IRHD scale Macro and Micro hardness scales.
Seals and O ring are subjected to fluid Immersion tests to ensure their functional behavior with respect to different operating fluids with which it is functioning.
Corrosion test is performed with metal alloys fitted with polymer O-rings and seals of varying size, shape, and composition to determine its behavior on metal corrosion. Both corrosion and the buildup of metal oxides such as rust, over the entire surface, were also observed where required.
| SG1OR-11 |
Hardness |
ASTM D1414 Cl 16 |
| SG1OR-8 |
Density |
ASTM D1414 Cl 13 |
| SG1OR-9 |
Immersion Test : Volume Change |
ASTM D1414 Cl 14 |
| SG1OR-12 |
Corrosion Test |
ASTM D1414 Cl 18 |
Seals Testing
Maeon Laboratories conduct many testing on a variety of seals, which include hydraulic seals, U-cups seals, piston cup seals, Square section seals, Quad ring seals, Vee packings, wiper seals , lathe cut seals, FKM / Viton Seals, , Teflon oil seals, Mechanical shaft seals, Bearing guards, flat seals. The critical tests which are applicable are listed above.
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Seals |
IS 15430 ISO 6447 ISO 2781 IS 5129-4 ISO 6194-4 IS 5382 IS 15545-4 ISO 16589-4 ISO 23936-1&2 IS 15946 ISO 9539 |
| SG1SL-4 |
Hardness IRHD |
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| SG1SL-5 |
Compression Set |
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| SG1SL-9 |
Tensile Strength & Elongation @ break |
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| SG1SL-3 |
Density |
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| SG1SL-6 |
Fluid Immersion - Volume, Hardness Change |
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| SG1SL-7 |
Heat Ageing, change in H, TS, EL |
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| SG1SL-12 |
Water Immersion |
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| SG1SL-2 |
Dynamic Low Temperature Test |
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| SG1SL-8 |
Low Temperature Stiffness |
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| SG1SL-11 |
Low Temperature Brittleness |
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| SG1SL-13 |
Cold Resistance, increase in hardness |
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| SG1SL-18 |
Resistance to Solvents, Mass, Hardness change |
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| SG1SL-19 |
Resistance to n-Pentane, Mass change, hardness change |
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| SG1SL-10 |
Stress Relaxation for seals |
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| SG1SL-1 |
Dynamic Test for seals |
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| SG1SL-16 |
RGD - Chemical Resistance in oil and gas environments |
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Gaskets – Common Tests
Gaskets are in important component in many engineering industry, automotive and domestic appliances and in construction. Maeon Laboratories conduct many testing on a variety of Gaskets, Rubber Gasket testing, Cork Gasket testing, Rubber/Cork Gasket testing, Asbestos Gasket testing, Composite Gasket testing, Gaskets for domestic appliances, Pressure Cooker gaskets etc. The critical tests which are applicable are listed above
Though specific list of test specification are stipulated by National and International standards, above specific tests which Maeon Laboratories perform frequently for Customers.
| SG1GG-2 |
Sealability |
IS 7714 ASTM F37 ASTM F112 |
| SG1GG-6 |
Binder Durability |
ASTM F148 |
| SG1GG-5 |
Flexibility |
ASTM F147 |
| SG1GG-3 |
Creep Relaxation |
ASTM F38 ASTM F1276 |
| SG1GG-4 |
Fluid Resistance |
ASTM F146 |
| SG1GG-7 |
Tension Test |
ASTM F152 |
| SG1GG-8 |
Corrosion Test |
ASTM F363 |
| SG1GG-10 |
Adhesion |
ASTM F607 |
| SG1GG-9 |
Weight loss after ageing |
ASTM F495 |
| SG1GG-11 |
Dimensional Stability |
ASTM F1087 |
| SG1GG-12 |
Density |
ASTM F1315 |
| SG1GG-9 |
Weight loss after ageing |
ASTM F495 |
| SG1GG-11 |
Dimensional Stability |
ASTM F1087 |
| SG1GG-12 |
Density |
ASTM F1315 |
| G1GG-13 |
Compressive Strength at elevated temperature |
ASTM F1574 |
| SG1GG-14 |
Flexible Barrier Packaging - Conditioning and Testing |
ASTM E171 |
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Industrial Rubber Gaskets |
IS3400, IS 1149 |
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Domestic appliance Gaskets, Pressure cooker Gaskets |
IS 7466 |
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Hardness IRHD |
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Tensile Strength |
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Elongation |
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Compression Set |
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Accelerated Ageing |
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Oil / Liquid / Fuel Ageing |
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Water Absorption |
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Total Zinc Oxide Content |
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Auto Clave Ageing |
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Heavy Metals test |
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Performance test for pressure cooker gasket |
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Rubber Cork Gaskets Testing
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RUBBER CORK GASKETS |
IS 4253, IS 5569, IS 14538, IS 1069, ASTM F36 |
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Dimensional Stability |
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Density |
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Tensile Strength |
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Compressibility & Recovery |
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Flexibility |
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Fluid Resistance |
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Moisture Content |
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Water Soluble Matter |
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Immersion Test |
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Compression Set |
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Chemical Test on Water Extract |
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Thickness |
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Oil Absorption |
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Freedom from corrosive impurities |
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Resistance to mold growth |
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Resistance to Fuel |
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ASBESTOS GASKETS |
IS 27I2, IS 10330, IS 6210, ASTM F806 |
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Density |
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Flexibility after ageing |
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Compressibility and Recovery |
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Stress Relaxation |
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Oil Absorption |
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Water Absorption |
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Resistance to acids |
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Tensile Strength |
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Loss on ignition |
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Lubricant Content |
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Graphite Content |
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Binder Content |
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Asbestos Content in yarn |
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Production Specification Test - Seals & Gaskets
Validation of quality and performance of the product as a whole is carried via the stipulations and guidance provided by national and international specifications on Seals and Gaskets. Some of the standards. Maeon laboratories are capable of testing the Seals and Gaskets for compliance are listed above.
| SG1PR-1 |
Lip-type seals |
IS 5129 : 2000 |
| SG1PR-2 |
Lip-type seals |
ISO 6194 |
| SG1PR-3 |
Lip-type seals |
IS 15545-4 |
| SG1PR-4 |
Lip-type seals |
ISO 16589-4 |
| SG1PR-5 |
Rubber Seal for gas supply pipes |
IS 15430 |
| SG1PR-6 |
Rubber Seal for gas supply pipes |
ISO 6447 |
| SG1PR-7 |
Sealing ring for gas water main sewers |
IS 5382 |
| SG1PR-8 |
Composition cork testing |
ISO7322:2014 |
| SG1PR-9 |
Agglomerated composition cork and rubber cork for gaskets |
ISO 4708:2017 |
| SG1PR-10 |
Gaskets for pressure cooker |
IS 7466 : 1994 |
| SG1PR-11 |
Specification for rubber gaskets |
IS 11149 : 1984 |
| SG1PR-12 |
Gaskets and packings: composition cork - Test methods |
IS 14538-2 |
| SG1PR-13 |
Plain cork sheets - Cork composition sheets - Specification |
IS 4253:2008 Part 1 |
| SG1PR-14 |
Cork and Rubber sheets - Cork composition sheets - Specification |
IS 4253: 2008 Part 2 |
| SG1PR-15 |
Cork and Cellulose Base - Jointing material - Specification |
IS 5569: 1970 |
| SG1PR-16 |
Compressed asbestos fibre jointing - Specification |
IS 2712 : 1998 |
| SG1PR-17 |
Metal Jacketed Gasket |
ASTM F68 ASME B16.20 |
| SG1PR-18 |
Cork test standards |
ISO / TC 87 |
