Polymers and elastomers
Polymers and elastomers: scope, limits of use and technical checkpoints.
5 guides
-
How should NBR, EPDM and SBR be compared?
NBR, EPDM and SBR are different elastomer families. NBR may be investigated for oil contact, EPDM for outdoor exposure and certain water applications, and SBR for general mechanical and abrasion requirements; however, t…
-
FKM, IIR and CR material families
FKM, IIR and CR denote different elastomer families; they cannot be used as if they were a single 'special rubber' class. Selection must be based on permeation, weathering, deformation and actual compound data in additi…
-
Selection questions for UHMWPE and XLPE inner tubes
UHMWPE and XLPE are related to polyethylene but are different structural designations. UHMWPE refers to ultra-high molecular weight and XLPE to a cross-linked structure; no common pressure, temperature or chemical compa…
-
Why a material name alone is not compatibility approval
The general chemical resistance of a material is not approval for the use of all hoses or fittings that contain that material. Compatibility is verified together with the actual product, fluid mixture, temperature, conc…
-
Seal material, hardness and compound designation
Seal hardness and seal material are not the same information. Different hardnesses and formulations within the same elastomer family can behave differently; the correct seal is selected together with the connection geom…
Customers with an account can access all guides, terms and calculators. Sign in to see all guides