Introduction of imported star ring and electromechanical equipment
1) the star ring (X-ring) is also a standard part, and the cross section is X sealing ring. It is suitable for machinery, valve, cylinder, pump and so on. The main specifications to American Standard AS568 as the standard, the diameter of 1.78, 2.62, 3.53, 5.33, 6.99; the spot mainly use NBR and fluorine rubber and other non-standard specifications can also be customized mold. The star ring is a four lip section sealing ring. The same as it o ring has the advantages of convenience, economy and wide application field etc.. Compared with O-Ring, it improves the problems of distortion, extrusion and so on. In the reciprocating movement, the rotation movement and the spiral motion of the seal system, it can reflect its advantages more. It has a good interchangeability with the trench of the AS 568A standard series O-Ring. The star ring can be applied to seal gas and liquid in dynamic or static occasions. It is suitable for reciprocating piston, piston rod and plunger. It can also be applied to shaft and mandrel when swinging and rotating.
2) X type sealing ring working pressure: when the static no retaining ring, up to 5MPA; when there is a ring, up to 40MPA.
Dynamic, when the reciprocating movement has no retaining ring, it can reach 5MPA; the reciprocating movement has a retaining ring, up to 30MPA; when the rotating movement has a ring, it can reach 15MPA;
3) speed of movement: reciprocating motion, up to 0.5M/S; rotational motion can reach 2M/S.
4) temperature: the ultimate temperature of NBR is -40~120 C, and the limit temperature of VITON is -40~240 C.
5) the characteristics of the star type ring:
A, good resistance to distortion and resistance to extrusion; B, double sealed lip; C, no rolling phenomenon; D, small friction resistance;
The performance of E and dynamic seal is excellent.
Two, inspection regulations for the entry of rubber seals, such as special imported star shaped rings for mechanical and electrical equipment
Imported star type rubber products in the inquiry, order, delivery, delivery, use and so on a series of processes, in which the receiving link is also a very important link. It is actually a corresponding check on the product ordered before it is used. Here, Taiwan Asahi Meike seal XOK, suggestions from the following aspects:
1) whether the visual packaging is damaged or not, so as to avoid the damage of the sealing ring.
2) whether the specification size, material hardness, quantity and color of the outer packing of the sealing ring coincide with the sales list.
3) whether there are any bad phenomena such as burr, bad flying edge, convex and concave point and breakage, etc.
4) check the quantity: if the quantity is not large, the number of points can be used. If the specification is small and the quantity is quite large, it is recommended to check the number of each package ring by weighing the electronic balance.
5) dimension and tolerance confirmation: the size of the sealing ring can be measured by the vernier caliper, which is carried out in the form of a spot check. The sampling inspection rules suggest: number 500~1000, sampling 5%; quantity 1000~5000, sampling inspection 3%; quantity 5000~10000, sampling inspection 2%; quantity 10000, sampling inspection 1%.
If there is any problem above, we need to contact the supplier in time.
Three. The special import star shaped ring of mechanical and electrical equipment has many advantages and wide use
Specification size: inner diameter * line diameter;
Implementation standards: American Standard AS568, Japanese standard JIS2401-P, JIS2401-G and so on;
Material hardness: NBR70 Black;
Use temperature: Limit: -40~120 C, long term: -20~100 C;
Performance characteristics: good resilience seal, high temperature resistance, oil resistance, stable work in different medium, and long service life.
Widely used in gas or liquid medium, it can be used for a long time in all kinds of static and dynamic environments. The O sealing ring is usually installed in the groove of the outer circle or the inner circle which is rectangular in the groove. In aerospace equipment, electronic and electrical appliances, agricultural machinery, sanitary ware, mining machinery, automobiles, watches, ships and other industries