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Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Specifications
Brand Name :
YUE MI
Model Number :
ST
Certification :
ISO SGS
Place of Origin :
Guangzhou, China
MOQ :
10/PCS
Price :
consult
Payment Terms :
L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability :
500/Set/Month
Delivery Time :
5-8 work days
Packaging Details :
Details Carton
Dimensions :
Depend your model
Speedlimit :
≤10m/s
Elatomer :
NBR, EPDM, Viton
Transport Package :
YUEMI Standard or Customised
Model No :
ST
Product Type :
Armstrong Pump Seal
Description
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment

d(inch) d(mm) D1 D3 L1 L2 L3
YM ST-1-1/8 28.575 59.40 47.60 25.30 25.60 15.90
YM ST-1-5/8 41.275 71.80 62.00 25.30 29.50 15.90
YM ST-2-1/8 53.975 84.60 79.40 25.30 29.30 15.90
YM ST-2-5/8 66.675 111.0 88.90 25.30 41.30 15.90

Product Description

Parameter Value/Description Unit/Note
Model YM-ST Standard Temperature (ST) or Special Type mechanical seal
Seal Type Single-Spring Unbalanced Seal Cost-effective for general industrial applications
Face Materials - Rotating: Carbon Graphite
- Stationary: Silicon Carbide (SiC)		 Graphite/SiC pairing for moderate wear resistance
Housing Material Stainless Steel 304 (Standard)
- 316L (Optional)		 316L for corrosion resistance in chemical environments
Pressure Range10 1.2 MPa Suitable for low-to-medium pressure pumps (e.g., water, oil)
Shaft Diameter Range 20 mm - 60 mm Common shaft sizes in pumps and mixers
Maximum Rotational Speed 2900 RPM Matches standard motor speeds (50 Hz)
Temperature Range -20°C ~ 140°C Elastomer: NBR (standard); FKM up to 180°C (optional)
Leakage Rate ≤10 m/s Meets ISO 21049 standards for non-critical services
Media Compatibility - Water, Mineral Oils, Aliphatic Hydrocarbons Not recommended for strong acids, alkalis, or solvents
Installation Type Insertion-Mounted (Simple Axial Fit) Requires basic alignment; suitable for field repairs
Elastomer Material NBR (Standard)
- FKM (For High-Temp/Chemicals)		 NBR: pH 6-8 compatibility; FKM: pH 0-14
Standards Compliance ISO 21049, RoHS Certified for environmental and safety requirements
Key Features - Anti-Rotation Pin
- Pre-Lubricated Faces
- Economical Spare Parts		 Simplified maintenance; ideal for non-critical processes

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Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment

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Product Detail
Brand Name :
YUE MI
Model Number :
ST
Certification :
ISO SGS
Place of Origin :
Guangzhou, China
MOQ :
10/PCS
Price :
consult
Contact Supplier
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment
Type ST Armstrong Series Pump 4300 John Crane Mechanical Seal for Effective Fluid Containment

YUEMI

Verified Supplier
3 Years
guangdong, guangzhou
Since 2002
Main Products :
Water Pump Mechanical Seal, Grundfos Pump Mechanical Seal, Flygt Mechanical Seal
Total Annual :
3000000-5000000
Employee Number :
50~80
Certification Level :
Verified Supplier
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