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This seal is dual un-pressurized seal. Also，it is high-performance low emission pusher seal. it has type 1648 as single seal & type 3648 as pressurized seal.
Features/Benefits：
Low emission seal face design
Pumping ring for optimized flow
Reverse-pressure capable
API 682 compliant
Recommended Applications：
API 610 Pumps
Oil and gas (refineries)
Petrochemicals
Process pumps
Other rotating equipment
About Us：
Asinoseal is a mechanical seals manufacturer specialized in developing, manufacturing and exporting of high quality products. We produce a full range of mechanical seals from single spring, metal bellow seals, cartridge seals to agitator seals. Now Asinoseal is concentrating more on providing solutions for fluid leakage instead of just making mechanical seals. We have grown up to be an expert in fluid sealing. Are you worried about sealing problems？Do you need help in pump repair? Talk to us！
Background Knowledge：
How rotary face does its transmission
Spring interference transmission: Both ends of spring are installed on spring seat and rotary face with interference, and do transmission by making use of the feature of smaller and smaller inner diameter as a result of spring rotating along the helical direction. This transmission mode is characterized by simple structure and mere transmitted in one direction.
Spring hook transmission: Both ends of spring are respectively hooked to spring seat and rotary face for transmission. This transmission mode is characterized by compact structure，reliable work and mere transmission in one direction.
Lug, fork transmission: By making use of concave and convex type of metals, it is suitable for complex structures. When there is relative axial movement, it can ensure reliability of transmission and allow mechanical seal to have a larger deflection.
Bellows transmission: direct transmission using bellows.
Drive screw transmission：By making use of screws，this transmission mode is commonly used in multi-spring structures.
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