Imported hole O-ring before installing O-ring (O-type rubber seals), check the following: whether the introduction of angular drawings whether sharp edges chamfered or rounded; inner diameter of whether to remove the burr surface for contamination; seal Are parts and components have been applied grease or lubricant fluid (to ensure media compatibility with the elastomer is recommended to lubricate the seal with liquid); do not use greases containing solid additives such as molybdenum disulfide, zinc sulfide. 2. Manually install O-ring (O-type rubber seals): Use no sharp edges of tools; to ensure O-ring (O-type rubber seals) do not distort, stretch O-ring may not be excessive (O-type rubber seals) ; to make use of aids to install the O-ring (O-type rubber seals), and to ensure correct positioning; the adhesive sealing strip into the O-ring (O-type rubber seals) can not be stretched at the junction. 3. mounting screws, splines: When the O-ring when (O-type rubber seals) stretch, through screws, splines, keyways, you must use the installation mandrel. The mandrel may be relatively soft, smooth metal or plastic, without burrs or sharp edges. When you install the compression screw, tighten the screws should be symmetrical, in the direction of the order shall be tightened. Taiwan Wall top seal -OTP professional custom large size O-ring, customized special non-standard large-sized O-ring NBRO-ring is a circular cross-section of a rubber O-ring, its cross-section O, it is called the O-ring, then the size of the O-ring how to determine it, what are the criteria it, the following are O-ring size specifications and standards outlined. Import O-ring standard: The following is GB GB3452.1-92 the standard import O-ring specification inner diameter * diameter (1.78-133.07 * 1.78MM) Taiwan O-ring inner diameter size * diameter (1.24-247.32 * 2.62MM ) shaft O-ring inner diameter size * diameter (4.34-456.06 * 3.53MM) hole with an inner diameter of O-ring size * diameter (10.46-557.61 * 5.33MM) wear resistant O-ring inner diameter size * diameter (113.67- 557.66 * 6.99MM) high-temperature O-ring inner diameter size * diameter (24.4-144.4 * 3.1MM) oil-resistant O-ring inner diameter size * diameter (149.3-299.3 * 5.7MM) import NBR O-ring inner diameter * Specifications line Diameter (149.5-399.5 * 8.4MM) import fluorine rubber O-ring inner diameter * diameter specifications (0.8-500 * 0.5-1MM) imported silicone O-ring inner diameter * diameter specifications (1-2000 * 1-15MM)