German gummiwerke seals gummiwerke models gummiwerke prices

gummiwerke seals refer to devices that prevent fluid leakage, formed by at least one pair of end faces perpendicular to the rotation axis maintaining contact and relative sliding under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism, in conjunction with auxiliary seals. When the auxiliary seal of the compensation ring is a metal bellows, it is called a bellows mechanical seal. There are mainly the following four types of components. a. Primary sealing elements: rotating ring and stationary ring. b. Auxiliary sealing elements: O-rings. c. Clamping elements: springs, thrust rings. d. Drive elements: spring seat and keys or fixing screws.

gummiwerke seal principle

Since there is an oil film controlled by the oil seal lip between the oil seal and the shaft, this oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film causes the end where the oil film contacts the air to form a meniscus, preventing the leakage of the working medium and thus achieving sealing of the rotating shaft. The sealing capability of the oil seal depends on the thickness of the oil film on the sealing surface; if the thickness is too great, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear on the oil seal and shaft; if there is no oil film between the sealing lip and the shaft, it is easy to cause heating and wear. Therefore, during installation, some oil must be applied to the sealing ring, and it must be ensured that the skeleton oil seal is perpendicular to the shaft centerline; if not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, which will also lead to excessive wear of the sealing lip. During operation, it is ideal for a slight amount of lubricant in the housing to seep out to achieve the state of forming an oil film at the sealing surface.

gummiwerke seal applications

Skeleton oil seals are widely used in industries such as aviation, automotive, motorcycles, railways, vehicles, ships, home appliances, and construction machinery. They are suitable for sealing rotating and reciprocating motions. Installed on various heavy-duty engines, gearboxes, axles, ships, cylinders, and other parts. Mainly prevents the permeation of the sealed medium (gas, liquid) and the entry of external foreign matter into the body. Precautions: The pressure-bearing range of ordinary oil seals is very limited, generally 0.03 MPa. This pressure is generally formed by the height difference of the lubricating oil itself. If higher pressure needs to be sealed, high-pressure oil seals should be selected (generally can withstand up to 1 MPa pressure) or other sealing forms should be selected.

gummiwerke seal specifications and uses

1) Ordinary single-lip type: Generally used for sealing mineral oil, water, and other media on high and low-speed rotating shafts and reciprocating motions. Ordinary oil seals are used in environments with less dust and impurities, resistant to medium pressure<0.05MPa occasions, maximum linear speed 15m/s, reciprocating motion speed<0.1m/s. 2) Ordinary double-lip type: In addition to the usage characteristics of the above-mentioned S type oil seals, they can also prevent dust. Ordinary oil seals with dust-preventing lips can prevent dust, resistant to medium pressure<0.05MPa occasions, linear speed ≤ 15m/s. 3) Springless type: Single-lip inner-skeleton rubber oil seal without spring. Generally suitable for low-speed conditions, with lubricating grease as the sealing medium. Linear speed ≤ 6m/s. 4) Outer-skeleton single-lip type: Single-lip outer-skeleton rubber oil seal with spring, thin waist, good followability, good rigidity. Ordinary oil seals are used in environments with less dust and impurities, resistant to medium pressure<0.05MPa occasions. Cases where the rotational axis speed ≤ 15m/s. 5) Outer-skeleton double-lip type: Double-lip outer-skeleton rubber oil seal with auxiliary lip, thin waist, good followability, high rigidity, good coaxiality. Ordinary oil seals with dust-preventing lips can prevent dust, resistant to medium pressure<0.05MPa occasions. Rotational speed ≤ 15m/s. 6) Assembled single-lip type: Outer-skeleton oil seal formed by assembling inner and outer skeletons with rolled edges, featuring high installation precision, fast heat dissipation, and heavy-load characteristics. Suitable for heavy-load conditions under high temperature and high speed, medium pressure ≤ 0.05MPa, maximum linear speed ≤ 15m/s. 7) Unidirectional return flow type right-hand, left-hand: Angled diagonal ribs are manufactured on the air side of the lip, utilizing hydrodynamic principles to produce a unidirectional pumping action with a return flow effect. Related to the rotation direction of the shaft, due to the return flow effect, the radial force is smaller than that of ordinary oil seals, reducing wear and heat generation, extending service life, suitable for medium pressure<0.05MPa occasions, rotational speed ≤ 20m/s. 8) Pressure-resistant type: Short lip, short and thick waist, has pressure-resistant function, working pressure ≤ 3MPa. Suitable for occasions with medium pressure ≤ 3MPa, suitable for shaft end oil seals of high-pressure pumps, generally PV value ≤ 8. Rotational axis speed ≤ 15m/s.

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