Quality materials

Throughout the years we have been able to maintain our market position thank to the durable quality of our products. The use of high quality materials will reduce maintenance cost and thanks to the expected lifetime of the products, the total cost of ownership per year will be less. Buying quality products means buying a long term solution.

The specifications below are applicable to all our rubber rings, like Varioseal and the rubber of our repair parts:

NBR (nitrile butadiene rubber)

Use:gas, drinking water and waste water systems
Temperature range:-5 to +50° C.
Hardness:70 IRHD (international rubber hardness degrees), depending on use

EPDM (ethylene-propylene diene monomer) rubber

Use:drinking water systems
Hardness:70 IRHD

Perbunan rubber (based on polymer-acrylonitrile butadiene rubber)

Use:gas, drinking water and waste water systems
Temperature range:-30 to +100° C. but can stand up to +120° C. for short periods
Hardness:approx. 60 shore A

For neutral salt solutions, petrol and kerosene, as well as gases, including nitrogen and oxygen, the maximum permitted temperature is +50° C.

GGG45 ductile cast iron conforming to EN-GJS-450-10

Use:in all kinds of situations. See product specifications (e.g. body and clampring)
Tensile strength:min. 450 N/mm2
Elongation:min. 10%
0.2% elongation limit:min. 310 N/mm2
Hardness:200 HB (Brinell hardness)

A2 stainless steel (AISI 304) DIN 1.4301

Use:in all kinds of situations. See product specifications (e.g. bolts, nuts and repair clamps)
Tensile strength:min. 565 N/mm2
Elongation:min. 50%
0.2% elongation limit:min. 310 N/mm2
Hardness:80 RB (Rockwell hardness B)

A4 stainless steel (AISI 316) DIN

Use:in all kinds of situations. See product specifications (e.g. bolts, nuts and repair clamps)
Tensile strength:min. 620 N/mm2
Elongation:min. 45%
0.2% elongation limit:min. 415 N/mm2
Hardness:..RB (Brinell hardness)

37-2 Steel

Use:in all kinds of situations. See product specifications (in particular ST system)
Tensile strength:min. 370 N/mm2
Elongation:min. 15%
0.2% elongation limit:min. 240 N/mm2
Hardness:126 RB (Brinell hardness)

Georg Fischer Waga N.V.
Lange Veenteweg 19
P.O. Box 290
8160 AG Epe
Netherlands

waga dot ps #at# georgfischer dot com

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