Single end face and double end face mechanical seals are two common sealing forms that are suitable for different working conditions and requirements. Here is their comparison:
1. Single end mechanical seal
Structure: There is only one pair of friction pairs (static ring and dynamic ring).
Features: Simple structure, easy installation and maintenance, low cost.
Applicable scenarios: Suitable for general working conditions such as low pressure, low speed, and non hazardous media.
Advantages: Low cost, easy maintenance.
Disadvantages: Limited sealing effect, not suitable for high-pressure, high-speed or hazardous media.
2. Double end mechanical seal
Structure: There are two pairs of friction pairs, forming two sealing surfaces.
Features: Complex structure, better sealing effect, suitable for harsh working conditions.
Applicable scenarios: Suitable for high pressure, high speed, dangerous or easily leaking media.
Advantages: Strong sealing performance, high reliability, suitable for hazardous media.
Disadvantages: High cost, complex installation and maintenance.
Comparative Summary
Sealing effect: Double end faces are superior to single end faces.
Cost: The single end cost is relatively low.
Maintenance: Single end faces are easier to maintain.
Applicable working conditions: The single end face is suitable for general working conditions, while the double end face is suitable for harsh working conditions.
Select by
Working condition requirements: Select based on pressure, speed, and medium characteristics.
Cost budget: When the budget is limited, you can select a menu option.
Maintenance requirement: When maintenance conditions are limited, a single end face is more suitable.
){kind=link}