German LEADER seals LEADER models LEADER prices

LEADER seals are a type of friction seal or stuffing box used to prevent liquid leakage between the shaft and bearing of compressors or other fluid handling equipment. They are also sealing devices designed to prevent leakage at the pump shaft and housing. Common types of shaft seals include packing seals, mechanical seals, and power seals. The shaft seal for reciprocating pumps is typically a packing seal. When transporting media where leakage is not permitted, diaphragm reciprocating pumps can be used. The shaft seals for rotary pumps (including vane pumps, rotor pumps, etc.) mainly consist of packing seals, mechanical seals, and power seals.

LEADER seal features

1) No need to measure the seal working length during installation; 2) The shaft can be adjusted at any time; 3) No leakage issues occur during startup because the seals have been pre-tested; 4) During installation, only the seal cover bolts need to be fitted and tightened, making it easy to ensure assembly quality; 5) Protects the sealing surfaces from contamination by debris or damage due to operational errors before installation or startup; 6) Can be readjusted after thermal expansion of the machinery; 7) Self-centering through fit cooperation; 8) Seals can be easily removed for cleaning and inspection without disassembling the pump equipment. The API682 standard recommends cartridge mechanical seals for all mechanical seals.

LEADER seal startup preparation

1) Conduct a comprehensive inspection of the mechanical seal, as well as the completeness of auxiliary devices and pipeline installations, to ensure they meet technical requirements. 2) Perform a static pressure test on the mechanical seal before startup to check for any leakage. If there is significant leakage, identify the cause and take measures to eliminate it. If this is ineffective, dismantle, inspect, and reinstall. Generally, the static test pressure is 2~3 kg/cm². 3) Rotate the pump according to its direction to check if it moves smoothly and evenly. If rotation is difficult or stuck, check for incorrect assembly dimensions or unreasonable installation.

LEADER seal precautions

1) Shaft speed: Due to design and structural reasons, high-speed shafts should use high-speed oil seals, while low-speed shafts should use low-speed oil seals. Low-speed oil seals must not be used on high-speed shafts, and vice versa. 2) Ambient temperature: In higher operating temperatures, select polyacrylate, silicone, fluorine, or fluoro-silicone rubber. Measures should be taken to lower the oil temperature in the tank. In lower operating temperatures, select cold-resistant rubber. (3) Pressure: General oil seals have poor pressure resistance and may deform under excessive pressure. Under high-pressure conditions, use pressure-resistant support rings or reinforced pressure-resistant oil seals. 4) Installation eccentricity: Excessive eccentricity between the oil seal and the shaft will reduce sealing performance, especially at high shaft speeds. If eccentricity is too large, use oil seals with a "W" shaped cross-section. 5) Shaft surface finish directly affects the service life of the oil seal; a smoother shaft surface results in a longer service life. 6) Ensure there is an adequate amount of lubricating oil at the lip of the oil seal. 7) Pay special attention to preventing dust from entering the oil seal.

Weidou Intelligent Technology specializes in selling German LEADER seals, LEADER O-rings, LEADER sealing strips, LEADER pipe seals, LEADER cable seals, LEADER rubber seals, LEADER mechanical seals, LEADER gaskets, LEADER oil seals, LEADER shaft seals, LEADER metal seals, LEADER high-pressure seals, LEADER spiral seals, LEADER centrifugal seals, LEADER sealing rings, LEADER original imports from Germany. We welcome inquiries and orders from customers.