Since 2006, Focus on rubber seals

Selection and installation of seals

by:ORK      2022-11-16
First of all, when we buy, we must choose to buy the sealing ring produced by the regular factory. When purchasing, we must see the origin of the trademark of the sealing ring, whether there is a product qualification certificate, product instruction manual, production date, shelf life, etc. in the packaging bag. Be sure to do a thorough inspection before installing seals. First, check the appearance quality of the sealing ring to see if there are burrs, cracks, openings, etc. on the edge, and whether there are dust spots and particles on the lip. Good quality sealing ring (such as UNS type sealing ring) has a glossy surface, good elasticity and flexibility, it will stretch when pulled by hand, and it will return to its original shape immediately after loosening, without any elastic deformation; and poor quality The sealing ring has a black surface and poor elasticity. It will not automatically return to its original shape after being stretched, or it will take a long time to recover, or even break. Furthermore, a comparison should be made before installation. First, the shape and size of the new and old seals should be compared. If the difference is large, even if they are installed reluctantly, they will not have a sealing effect. When installing in winter, you can soak it in warm water to enhance its elasticity. Except for the O-ring, the O-ring can be pulled by hand to make it larger and softer before installation. Basic steps to check the fault of the sealing ring Step 1: Before disassembling, check the use status of the sealing ring in three points: 1. Leakage 2. Appearance of the sealing area 3. Oil leakage point. Step 2: Clean the sealing area to check whether there are: lack of chamfering in the assembly hole, loose oil seal in the assembly hole, shaft—Impurities such as hole eccentricity, oblique installation of seals, and improper installation of sealing rings. Step 3: You can inject ultraviolet dye into the cavity or spray white powder on the sealing area, then run for 15 minutes, and then use ultraviolet or visible light to check the oil leakage. Step 4: Check whether the use of the seal assembly area exists: the assembly hole is too rough, there are holes or other defects in the hole, the shaft is too dirty, the shaft is corroded, and the medium is dirty. Step 5: After the sealing ring is removed, check whether the main lip of the sealing ring is normal or the main lip is severely worn. The outer diameter is normal or abnormal. Company website: https://www.orksealing.com/
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