Standard Multi-spring Mechanical Seal M7N
The Model M7N is a standardized cartridge-mounted multi-spring
mechanical seal designed for general industrial pump applications.
It features a corrosion-resistant stainless steel assembly with
multiple helical springs that provide uniform face loading and
compensate for minor shaft misalignment. The seal utilizes a
balanced design with primary sealing faces of reaction-bonded
silicon carbide versus premium carbon graphite, ensuring reliable
performance in moderate pressure and temperature ranges. Its
cartridge construction enables precise pre-set installation without
requiring manual spring compression measurement. This seal is
compatible with ANSI/API process pumps handling water, light
hydrocarbons, and non-abrasive chemicals at temperatures up to
180°C and pressures to 15 bar. The standardized dimensions ensure
interchangeability with OEM equivalents while providing consistent
sealing performance in
Operating parameter:
Wave Spring, O-ring pusher mechanical seal Type M7N is a robust and
highly interchangeable seals. Used in the different media
conditions due to extend material options. It is ideal for use in
paper industry, textile printing, chemical petroleum, shipbuilding
and sewage treatment industry.
- Application: seals are primarily used in Clean water,sewage
water,oil and other moderately corrosive fluids etc.
- Standard: Din24960,ISO3069,EN12576,API682 standards
- OEM and Customized products is welcomed.
- Fast Delivery and Best Sevice.
| Product name | Mechanical seal, Water seals, water pump seals, mechanical seals,
mechanical water pump seals, water seals used in water pump,
stainless steel water seals, rubber water seals, shaft seal |
| Specification: | Width: 12mm (1/2), 19mm (3/4'), 25mm (1') or Custom |
| Thickness: 0.075mm, 0.1mm, 0.2mm |
| Length: 10m--50m |
| Density: 0.2g/cm3-0.3g/cm3 |
| According to customer's requests |
| Axial movement: | ±1.0mm |
| Seal end face: | black lead, SiC, WC, AlO, Stainless steel |
| Auxiliary seal: | NBR FKM EPDM PTFE |
| Metal structure: | 304, 316, 904L |
| line speed: | ≤20m / S |
| Temperature Range: | -50C to 220C |
| Tensile Strength: | 8N/mm2 |
| Elongation: | 25% min |
| Pressure Resistance: | up to 25 Bar |
| Chemical resistance: | PH:0-14 |
| Samples: | Free samples are available when we have inventory. |
| Delivery time: | Usually 5~10 days after receiving your advance payment. |
| Place of origin | Jiaxing, Zhejiang, China(mainland) |
| Applications | Water Pump seal major for Water Pumps and household pumps. |
Details on Mechanical seal:
| 1 Year Warranty Single Mechanical Seal For Pump M7N Sic Seal Face |
| Surface treatment: | according to customer's requirement. |
| Strict Quality control: | We have 100% inspection before delivery to ensure every pieces are
in good quality. |
| Packing: | 1. Industrial packaging: plastic bag + kraft paper + carton or
wooden ; plastic tube + carton |
| 2. Commercial packing: 1pc/plastic bag + color box + carton |
| 3. As the clients' requirement |
| Note: | specifications can be customized according to Customers' needs. |
| Quality Standard: | ISO9001:2008; FDA certificate |
| Delivery time : | Generally 5~10 days, we determine the delivery time according to
customer demand |
| Conveyance : | According to customer needs |
| We have strict quality control processes. We supply high quality
mechanical seal with fair price. |
Drawing reference:
Unit: mm
Q1: What is the primary structural advantage of the M7N's
multi-spring design?A1: The multiple helical springs ensure uniform axial loading on
the seal faces, compensating for minor shaft misalignment and
eccentricity. This design maintains stable face contact under
variable operational conditions, reducing risk of leakage due to
vibration or runout.
Q2: Which face material combination does the M7N use, and for which
fluids is it suitable?A2: It employs reaction-bonded silicon carbide rotating against
carbon graphite. This combination offers reliable performance in
water, light hydrocarbons, coolants, and non-abrasive chemical
services up to 15 bar and 180°C.
Q3: Why is the M7N designed as a cartridge seal?A3: The cartridge design integrates all components into a single
pre-assembled unit. This enables quick installation without manual
spring adjustment, eliminates setting errors, and ensures correct
compression of the sealing faces.
Q4: Is the M7N compatible with regulatory standards for hygienic
applications?A4: Yes, its standardized dimensions and material finish comply
with hygienic requirements for Clean-in-Place (CIP) and
Sterilize-in-Place (SIP) processes, making it suitable for food,
beverage, and pharmaceutical applications.
Q5: What distinguishes a "balanced" seal design in the M7N?A5: The balanced design hydraulically reduces closing force on the
seal faces. This mitigates heat buildup and extends service life in
higher-pressure applications (up to 15 bar) by controlling
interfacial pressure.
