German compact technology seals, compact technology models, compact technology prices

compact technology seals are materials or components that prevent leakage of fluids or solid particles from adjacent mating surfaces and prevent external contaminants such as dust and moisture from entering machinery. The recommended storage temperature for seals is below 30°C to avoid high-temperature aging. Seals are classified into static seals and dynamic seals. Their main function is to prevent leakage of fluids or solid particles from adjacent mating surfaces and to prevent external contaminants such as dust and moisture from entering machinery. Static sealing refers to the tight closure of sealed chambers and containers, or stamps used for sealing documents and wills.

Advantages of compact technology seals

1) Oil seals have a simple structure and are easy to manufacture. Simple oil seals can be molded in one step; even complex oil seals do not require complicated manufacturing processes. Metal-cased oil seals only require stamping, bonding, insertion, and molding to combine metal and rubber into the required oil seal. 2) Oil seals are lightweight and consume little material. Each oil seal is a combination of thin-walled metal and rubber parts, resulting in minimal material usage and very light weight. 3) Oil seals require small installation space and have small axial dimensions, making them easy to machine and helping to keep machinery compact. 4) Oil seals offer good sealing performance and long service life. They have certain adaptability to machine vibration and spindle eccentricity. 5) Oil seals are easy to disassemble and convenient to inspect. 6) Oil seals are low-cost.

Precautions for compact technology seals

1) Preparation and precautions before startup: a. Thoroughly check the mechanical seal, auxiliary devices, and piping installation for completeness and compliance with technical requirements. b. Perform a static pressure test on the mechanical seal before startup to check for leakage. If leakage is significant, identify the cause and eliminate it. If this is ineffective, disassemble, inspect, and reinstall. The static test pressure is generally 2~3 kg/cm². c. Rotate the pump by hand according to its rotation direction to check for smooth and uniform movement. If rotation is difficult or stuck, check for assembly dimension errors and reasonable installation. 2) Installation and shutdown: a. Keep the seal chamber filled with liquid before startup. For media that solidify, use steam to heat the seal chamber to melt the medium. Manual rotation before startup is mandatory to prevent sudden startup from causing soft ring fracture. b. For mechanical seals using an external seal oil system, start the seal oil system first. Stop the seal oil system last after shutdown. c. After stopping a hot oil pump, do not immediately stop the cooling water for the seal oil chamber and face seal. Wait until the oil temperature at the face seal drops below 80°C before stopping the cooling water to avoid damaging seal parts. 3) Operation: a. If slight leakage occurs after pump startup, observe for a period. If leakage does not decrease after continuous operation for 4 hours, stop the pump for inspection. b. Pump operating pressure should be stable, with pressure fluctuations not exceeding 1 kg/cm². c. During pump operation, avoid cavitation to prevent dry friction and seal damage. d. Regularly check the sealing condition. During operation, if leakage exceeds the standard (heavy oil not more than 5 drops/min, light oil not more than 10/min), and there is no improvement within 2-3 days, stop the pump to inspect the sealing device.

compact technology seal specifications and applications

1) Standard single-lip type: Generally used for sealing mineral oil, water, and other media on high- and low-speed rotating shafts and reciprocating motions. Standard oil seals are used in environments with little dust and impurities, resistant to media pressure<0.05MPa, maximum linear speed 15m/s, reciprocating speed<0.1m/s. 2) Standard double-lip type: In addition to the usage characteristics of the above S type oil seals, they also provide dust protection. Standard oil seals with a dust lip can prevent dust ingress, resistant to media pressure<0.05MPa, linear speed ≤15m/s. 3) Springless type: Springless single-lip internal-cased rubber oil seal. Generally suitable for low-speed conditions with lubricating grease as the sealing medium. Linear speed ≤6m/s. 4) External-cased single-lip type: Single-lip external-cased rubber oil seal with spring, featuring a thin waist, good follow-up, and good rigidity. Standard oil seals are used in environments with little dust and impurities, resistant to media pressure<0.05MPa. Rotational axis linear speed ≤15m/s. 5) External-cased double-lip type: Double-lip external-cased rubber oil seal with auxiliary lip, featuring a thin waist, good follow-up, high rigidity, and good concentricity. Standard oil seals with a dust lip can prevent dust ingress, resistant to media pressure<0.05MPa. Rotational speed ≤15m/s. 6) Assembled single-lip type: External-cased oil seal assembled from inner and outer casings 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, media pressure ≤0.05MPa, maximum linear speed ≤15m/s. 7) Unidirectional return flow type (right-hand, left-hand): Angled ribs are manufactured on the air side of the lip. Using fluid dynamics principles, it produces a unidirectional pumping action with a return flow effect. Related to the shaft rotation direction, the return flow effect results in lower radial force than standard oil seals, reducing wear and heat generation, and extending service life. Suitable for media pressure<0.05MPa, rotational speed ≤20m/s. 8) Pressure-resistant type: Short lip and short, thick waist, providing pressure resistance. Working pressure ≤3MPa. Suitable for applications with media pressure ≤3MPa, suitable for shaft end oil seals of high-pressure pumps. Generally, PV value ≤8. Rotational axis linear speed ≤15m/s.

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