Stenso - Hovedkatalog 2019

Material overview: O-Rings N: Acrylnitrile-Butadiene-Rubber - Used in general machine constructions, hy- draulics, pneumatics. Resistant to mineral oil based pressure fluids, HFA, HFB and HFC fluids and water. F: Fluorine-containing Rubbers - Used at high temperatures and aggressive sur- rounding media, resistant to mineral based and synthetic pressure fluids, aliphatic, aromatic and chlorated hydrocarbons, phosphate-ester based poorly inflammable fluids. E: Ethylene-Propylene-Diene Rubbers - Used in valve and pump industry. Resis- tant to hot water, steam, phosphate-ester based poorly inflammable fluids , but is not resistant tomineral oils. S: Silicone-Rubbers C: Chloroprene-Rubbers O-ring (Part B) O-rings are standard sealing elements with circular cross section. Those used in the present application conform to the series of dimensions as per AS 568 A (American norms). StandardMOC for hydraulics applications is NBR, which guarantees partic- ularly good restistance to hydraulic fluids. To use O-rings with hardness of 70 ShoreA is to preferred. Swivel seal (PartA) The swivel seal cross section has been specially designed taking into account the slow raidal movement or slow rotating . The dynamic side is corner that can provided with a small chamfer to simplify assembly and also to get through the extrusion a stronger corner as can withstand higher pressure and ensures a secure not extrude out through extrusion gap. The radius on the inner diameter ensures and secure fit for the pre-stressing element. The expanded frictional area between O-ring and the profile ring also curtails relative movement with respect to each other. Depending of the cross- section of the seal, there may be none, one or two grooves made on the dynamic side. 273 AF-523 Swivel seal piston Material overview: Swivel seal AF-4115: PTFE with Glass fibre/lubricant - high abrasion resistance and inherent stability, good chemical resistance, used in various areas of industry and intermediatestress hydraulic applications. AF-2426: PTFE with Carbon: good abrasion resistance and inherent stability, good chemical resistance, used in water and water-oil emulsions with intermediate stress. Also designed for dry runs. AF-2413: PTFE with Carbon Fibre: very good abrasion resistance and inherent stability. Used in hydraulics, also intended for dry runs. AF-1111: PTFE with Econol - very high abrasion resistance and inherent stability, used in hydraulics and abrasive pressure fluid applications. AF-7710: PEHD 1000 - very high abrasion resistance and inherent stability, has a strong lip, with very good scraper effect. Has a limit in temperature maximum 80 C