Applications

ISO 3601-5 Conformity Tests

With the new edition of the standard ISO 3601-5 in April 2015 it has been achieved to define a standard for material formulations and requirements of finished parts on an international level. The O-Ring-Test-Laboratory Richter offers these conformity tests for O-rings /table 2) and formulations (table 3 NBR 70 S and NBR90 S; table 4 NBR 75 P and NBR 90 P; table 5 HNBR 75 and HNBR 90; table 6 FKM 70, FKM 75, FKM 80 and FKM 90; table 7 VMQ 70; table 8 EPDM 70 S and EPDM 80 S; table 8 EPDM 70 P and EPDM 80 P; table 9 ACM 70).

ISO 3601-5

Compression set tests are performed daily to safeguard the degree of cross linking directly on finished parts. At three hardness measurement stations laser-led tables for the centric positioning of O-rings under the penetrator are used for the hardness test on O-rings.

Hardness measuring stations

Further information about this standard can be found in the scientific paper “The O-Ring as Standardized Rubber Component.”

Further applications

Conformity assessment according to DIN EN ISO 9539

Resistance to solvents for nonmetallic materials in contact with combustion gases has to be proved by defined storage and redrying tests in acetone steam, dimethylformamide steam and n-pentane.

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Tests on hoses

To qualify elastomer materials for hoses, often a test directly on the hose is required. For this a splitting machine is available at the O-Ring test laboratory.

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Confirmity assessment according to E3A Sanitary Standards

This test is required from users as complementary test to FDA 177.2600 to safeguard the resistance of sealing materials to disinfectants and detergents.

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Low Temperature behaviour / Low Temperature flexibility

The low temperature behaviour of elastomer materials is described in confusingly many different test methods by suppliers or in some cases outlined very vaguely and not credibly.

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Durability Tests According to Arrhenius

As the service life of elastomers is limited due to the chemical failure mechanism of ageing through heat, the influence of temperature on service life can be depicted by means of Arrhenius lines.

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Blow-By-Gas resistance Tests

Blow-By gas mixtures are generally defined as gases which within the internal combustion engine get into the crankcase because of the overflow of the piston.

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Water / Steam / Coolant resistance Tests

We perform tests in water or steam, in coolant mixtures and other aqueous mixtures until over 200°C. For this approximately 70 autoclaves are available.

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Refrigerant compatibilty Tests

Especially for tests in refrigerants, like HFO-1234yf or R1234yf or R134a, we have got a special in-house filling system to create a vacuum in the autoclaves before filling them.

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Oil compatibilty Tests

Regularly we conduct resistance tests where the resistance to various oils is tested. For years now we perform resistance tests according to Bosch Rexroth for numerous oil and additive manufacturers.

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Conformity Tests according to automotive specifications

As accredited laboratory our results are accepted as impartial which has considerable advantages for the customer and the recipient of the test reports because these results are credible.

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DVGW

Since 2009 the O-ring test laboratory Richter is an accredited testing centre of the DVGW (German Technical and Scientific Association for Gas and Water) for conformity testing for the standards DIN EN 549, DIN EN 681-1 and DIN EN 682. For these we offer quality tests.

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