H - PU 94° SHORE A
Hydrolysis resistant polyurethane: An exceptionally wear and extrusion resistant material, very elastic and with a good hydrolysis resistance. Hardness: 94° Shore A +/- 1 Tempe...
Read moreBelow you find a short description on the used standard materials. In addition, Kofler-Dichtungen makes use of widely used standard materials. Therefore delivery of materials besides the mentioned below is possible. Please contact us.
Elastomers are materials which can be very strongly stretched by applying relatively little force, and which are not permanently deformed. Generally, elastomers can be divided into two main groups: chemically linked elastomers (rubbers) and thermoplastic elastomers.
Rubbers are high polymers whose macromolecules have been slightly cross linked by vulcanisation. Because of this network structure, they are not fusible and disintegrate at high temperatures. The network structure also has the effect that rubbers are insoluble and swell and shrink more or less depending on the medium.
Thermoplastic elastomers are materials which maintain the typical properties of elastomers throughout a wide range of temperatures. However, they are not chemically linked. Therefore, they can be melted at high temperatures and can be processed with the usual thermoplastic processing techniques. Thermoplastic elastomers are soluble and usually show a lower swelling than their chemically linked counterparts.
Hydrolysis resistant polyurethane: An exceptionally wear and extrusion resistant material, very elastic and with a good hydrolysis resistance. Hardness: 94° Shore A +/- 1 Tempe...
Read moreHydrolysis resistant polyurethane: An exceptionally wear and extrusion resistant material, very elastic. Excellent hydrolysis resistance in the most common hydraulic fluids and ...
Read moreHydrolysis resistant polyurethane with FDA certificate (common trade name: PU-FDA) Same mechanical properties as H-PU, but with an FDA certificate. Hardness: 94° Shore A +/- 1 ...
Read moreAcrylonitrile butadiene rubber Oil resistant material for standard applications. Hardness: at 20 °C: 85° Shore A +/- 5 Temperature range: -3°C to +120°C Pressure resistance:...
Read moreNBR 90° Shore has the same features as NBR 70° Shore, but it is harder and therefore more pressure resistant.
H-NBR with FDA certificate It has the same mechanical properties as H-NBR, but with an FDA certificate. Hardness: at 20 °C: 85° Shore A +/- 5 Temperature range: -20°C to +150...
Read moreFluorine rubber Particularly temperature and chemical resistant material. Hardness: at 20 °C: 85° Shore A +/- 5 Temperature range: -20°C to +220°C Pressure resistance: up to...
Read moreEPDM with FDA certificate It has the same mechanical properties as EPDM, but with an FDA certificate. Hardness: at 20 °C: 85° Shore A +/- 5 Temperature range: -45°C to max. +...
Read moreMethyl vinyl silicone rubber This material is easy to install, exceptionally resistant to weather, ozone and aging, has good electric insulation characteristics, and a very good...
Read moreExcellent resistance to chemicals and heat. Its elastic properties are similar to those of NBR elastomers. Hardness: 85° Shore A +/- 5 Temperature range: -10°C to +200°C Pres...
Read moreThermoplasts are fusible high polymer materials which are considerably harder and more rigid than elastomers within their application temperature range. Depending on their chemical structure their characteristics range from hard and brittle to tough and flexible. Because of their morphological structure larger stretchings are irreversible and the part remains plastically deformed, which is why these materials are also called plastomers.
In the seal industry, plastomers are used for hard seal elements such as back-up rings, guide rings and boxes, pressure rings and support rings
Polytetrafluoroethylene bronze 40 % PTFE filled with 40% bronze and pigment. Standard material for floating ring seals. Hardness: 60° Shore D +/- 3 Temperature range: -200°C t...
Read morePolytetrafluoroethylene pigmented turquoise PTFE filled with 1% pigment (and optionally 15% glass). Same chemical resistance as PTFE pure, but higher hardness. Hardness: 57° Sh...
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