Product Name: M7N, AKA M74, M74D Mechanical Seal for Chemical Centrifugal Pumps, KSB/Kaiquan Water Pumps, Vacuum Pumps, Axially Split Pumps, Blowers and Paper-making Machines Model NO.: M7N, AKA M74, M74D Balance: Unbalanced Type: HUU803 Standard: Standard Performance: Wear Temperature: Temperature Mechanical Seal Speed: High-Speed Mechanical Seal Pressure: Medium Pressure Mechanical Seals Structure: Single End Trademark: Yalan Transport Package: Carton Specification: Inner Diameter: 18 mm to 200 mm Origin: China HS Code: 8484200090 Product Description Basic FeaturesStructure: Single EndPressure: Medium Pressure Mechanical SealsSpeed: High Speed Mechanical SealTemperature: Temperature Mechanical SealPerformance: WearStandard: DIN24960, ISO3069, and GB6556Model NO.: M7N, M74, M74D (2 M74 Seals)Balance: UnbalancedSpecification: Inner Diameter: 20 mm to 300 mmProduct Detailed DescriptionM7N, AKA M74 Mechanical Seal for Chemical Centrifugal Pumps, KSB/Kaiquan Water Pumps and Double Suction PumpsStructural Features:single end, wave spring (M7N), multi springs (M74), unbalanced, independent direction of rotation, lug transmission. M7N has a simple way of transmission and good compatibility; the wave spring structure allows transferring particulate, crystalized and high viscosity content. M74 also has a simple way of transmission and the compensation components are pre-assembled; it is easy to install and has good compensation. The load on the seal faces are balanced and the sealing performance is stable and reliable.Industrial Standards:DIN24960, ISO3069, and GB6556Scopes of Application:widely used in chemical processing, oil refining, petrochemical engineering, sewage treatment, pharmacy and food production. Designed for chemical pumps, water pumps, screw pumps, sewage pumps, double suction pumps, paper making equipment and other rotary devices.Operation Parameters:Pressure: 1.6 MPa or lessTemperature: - 420 ~ 200 ºCLinear Speed: 20 m/s or lessMaterials:Rotary Ring: SiC/TCStationary Ring: Carbon/SiC/TCElastomers: NBR/EPDM/Viton/FFKMSprings: SS304/SS316/PH17-4/HC-276metal Parts: 410S/SS304/SS316/SS316L/HastelloyMediums:oil, water, acid, alkali, organic solvents and subjects that are easy to be crystallized or have granules and high viscosity.Customization:Changes of materials for getting other operating parameters are possible. Contact us with your requirements.