Stenso - Hovedkatalog 2019

16 General Technical Information Light Rubber products must be protected fromdirect sun and artificial light sources with high UV content. If articles are not pa- cked in opaque containers or special bags, it is essential that store roomwindows be coated with anti UVmaterial. Deformation If possible, store these products free from pressure elongation and deformation to avoid deformation. Preferably retain these products in their original packaging. Contact with Fluids and SemifluidMedia Rubber articles should not have contact with fluid or semifluid media during storage. Contact with solvents, oils and greases should be avoided. Contact withMetals Metals likemanganese, steel, copper and its alloys can destroy rubber products when in direct contact.Asimple protec- tive partition frompaper, polyethylene sheet,etc.,may be used to isolate the seals. Contact with Non-Metals Contact with other kinds of rubber or PVC is to be avoided. Storage Duration Keep storage time to aminimumand follow the principle of "first-in-first-out" in using the seals. Cleaning Cleansing of rubber products, if necessary, can be carried out with water, soap or methanol. Organic cleaning solvents like trichloro ethylene, carbon tetrachloride or petroleum are not to be used. All parts must be dried at room temperature before use. Storage Time The polymer incorporated in the rubber product determines its service life. The following table gives shelf life under optimal conditions. The following criteria should be strictly checked prior to first use and after the initial storing time. 1.) Recognizablemechanical destruction 2.) Permanent deformations and changes 3.) Check for hairline cracks or change in surface structure 4.) Check for undue softening or surface hardening of thematerial. Basic Polymer First Time Storage Storage after Inspection (2nd) Fluoroelastomer /GFPM Fluorosilicones Chlorosulphonated PE Neoprene (CR) Ethylene-Propylene-Diene (EPDM) Nitrile/PVC blend Natural Rubber Nitrile (NBR) Butyl Rubber Polyurethan (PU) Styrol Butadiene Rubber (SBR) 10 years 5 years 3-5 years 4 years 2 years 2 years WARNING vice conditions. In the event of a large duty cycle, pulsating operation and other complex operational conditions, simultaneous transgression of these values is not recommended. Due to a large variety of service conditions that may arise in course of actual use, the company does not take responsibility of or guarantee the functional accuracy of the individual components. Rights for changes are reserved. : Limits of application stated herein are standard values. They could be individually transgressed with due consideration to respective ser- Storage of rubber products