Germany CARCO seals CARCO models CARCO prices

CARCO seals are a typical representative of oil seals; the term "oil seal" generally refers to skeleton oil seals. The function of an oil seal is generally to isolate components requiring lubrication within transmission parts from the external environment, preventing lubricating oil leakage. The skeleton acts like reinforcing steel in concrete components, providing reinforcement and enabling the oil seal to maintain its shape and tension. Based on structural form, they can be divided into single-lip skeleton oil seals and double-lip skeleton oil seals. The secondary lip of a double-lip skeleton oil seal serves a dust-proof function, preventing external dust, impurities, etc., from entering the machine interior. Based on skeleton type, they can be divided into internally covered skeleton oil seals, externally exposed skeleton oil seals, and assembled oil seals. Based on operating conditions, they can be divided into rotating skeleton oil seals and reciprocating skeleton oil seals. Used in locations such as gasoline engine crankshafts, diesel engine crankshafts, gearboxes, differentials, shock absorbers, engines, and axles.

CARCO seals introduction

A mechanical seal is a shaft sealing device for rotating machinery, such as centrifugal pumps, centrifuges, reaction vessels, and compressors. Since the drive shaft passes through the interior and exterior of the equipment, there is a circumferential gap between the shaft and the equipment. Media inside the equipment leaks outward through this gap; if the pressure inside the equipment is lower than atmospheric pressure, air leaks into the equipment. Therefore, a shaft sealing device is required to prevent leakage. There are many types of shaft seals. Due to advantages such as low leakage and long service life, mechanical seals are the primary shaft sealing method for these equipment worldwide. Mechanical seals are also called face seals. In relevant national standards, they are defined as: "A device that prevents fluid leakage, constituted by at least one pair of faces perpendicular to the axis of rotation, which maintain contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism, in conjunction with auxiliary seals."

CARCO seals structural composition

1) Main components: rotating ring, stationary ring, cooling device, and compression spring (depending on specific equipment). 2) Auxiliary sealing elements: sealing rings (including O-shape, X-shape, U-type, wedge shape, rectangular flexible graphite, PTFE-covered rubber O rings, etc.). 3) Elastic compensation mechanism: springs, thrust rings. Spring seats and keys or various screws. 4) Classification: Divided into single-face and double-face; balanced and unbalanced; arbitrary rotation direction and fixed rotation direction.

CARCO seals installation technical requirements

Mechanical seals are high-precision mechanical components, and correct installation and operation significantly impact their service life. We generally follow the standards specified by the Ministry of Petrochemical Industry. The technical requirements for the pump installing the mechanical seal and the mating parts of the mechanical seal are as follows: 1) Shaft bending: maximum not greater than 0.05 mm; 2) Rotor runout: near the shaft sleeve at the rotating ring sealing ring location, not greater than 0.06 mm; 3) Axial shaft movement must not exceed ±0.5 mm; if a shaft sleeve is present, the shaft sleeve must not be loose; 4) Coupling alignment error: for gear couplings, not greater than 0.08–0.10 mm (P2008C); for elastic couplings, not greater than 0.05–0.06 mm; (common practice: axial runout<0.05, radial runout<0.10) 5) Concentricity tolerance of the gland (stationary ring seat) and the sealing spigot relative to the shaft centerline: 0.05 mm; perpendicularity tolerance of the surface contacting the gasket relative to the centerline: 0.03–0.05 mm. If requirements are not met, the seal chamber must be machined; 6) The end of the shaft sleeve where the rotating ring sealing ring is installed, and the end of the gland (or housing) where the stationary ring sealing ring is installed, should be chamfered and smoothed. 7) Exercise care when installing or removing mechanical seals; strictly prohibit the use of hammers and flat chisels to avoid damaging sealing elements. If deposits prevent removal, clean thoroughly before disassembly. 8) If mechanical seals are used on both ends of the pump, coordinate during assembly and disassembly to avoid neglecting one side while attending to the other. 9) For mechanical seals that have been in operation, if gland loosening causes seal movement, the rotating and stationary ring components must be replaced and must not be retightened for continued use. Because after loosening, the original operating trajectory of the friction pair changes, easily compromising the sealing integrity of the contact surface.

Weidou Intelligent Technology professionally sells German CARCO seals, CARCO sealing rings, CARCO sealing strips, CARCO pipe seals, CARCO cable seals, CARCO rubber seals, CARCO mechanical seals, CARCO sealing gaskets, CARCO oil seals, CARCO shaft seals, CARCO metal seals, CARCO high-pressure seals, CARCO spiral seals, CARCO centrifugal seals, CARCO sealing rings, CARCO original German imports. Welcome inquiries and orders from users.