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Hydraulic seals - introduction to the types of static seals

by:ORK      2022-11-02
Hydraulic seals - types and introduction of static seals 1. Hydraulic seal O-ring seals are circular seals in cross section, relying on pre-compression £ to eliminate gaps to achieve sealing, and can automatically increase the seal and seal with the increase of pressure p. Contact stress on the sealing surface, thereby improving the sealing effect. It can be used for static seal of high pressure end face and cylindrical surface, and also can be used for low pressure reciprocating dynamic seal with low movement speed. Inexpensive, simple, good sealing, automatic compensation after wear. Hydraulic seals 2. Various sealing gaskets for hydraulic sealing Combination sealing gaskets, which are made of oil-resistant rubber seals inner ring and steel outer ring, are easy to install and have reliable sealing. It is mostly used for end face sealing of threaded pipe joints, etc., and h-2 is the compression amount. 3. Hydraulic sealant sealant The sealant coating has fluidity and can fill the gap between the two joint surfaces, and it can seal and prevent leakage under a certain tightening force. According to the properties of the film formed between the two bonding surfaces, it can be divided into four types: dry adhesion type, dry peelable type, non-dry sticky type and semi-dry viscoelastic type. It is divided into two categories: liquid sealant and anaerobic sealant. After dry peelable coating, the solvent evaporates quickly, forming an elastic film, which is easy to peel off from the adhesive. It has good vibration resistance, but it is easy to volatilize and difficult to use on a large area. The non-drying viscous sealant does not dry for a long time after application, and always maintains viscoelasticity. Therefore, it has good detachability, high vibration resistance and impact resistance, and is suitable for large-area coating. The semi-dry viscoelastic type is between the above two and has the advantages of both. Anaerobic sealant is suitable for pressure sealing of smaller planes such as threaded pipe joints, which can prevent impact loosening and leakage. The use method of liquid sealant and anaerobic sealant is: pretreatment (oil removal, rust removal, decontamination)→Coating (coating 0.06-0.1mm)→dry→Fasten. Company website: https://www.orksealing.com/
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