Bellows Advantage

Leader in Bellows Sealing Technology 

YongHual Low-Temperature and High-Temperature bellows seals assure low emissions and optimized Mean-Time-Between-Planned-Maintenance (MTBPM). 

Superior Bellows Design
Manufactured with a 45º tilt edge at the bellows' inside diameter to disperse stresses and maximize operating life.
Self-Cleaning Design
Rotating bellows throw off suspended particles that clog spring-YH seals. This self-cleaning action eliminates the need for external flushing, filters or cyclone separators and their associated costs.
API-682 Qualified
The Low-Temperature and High-Temperature Series YongHua Bellows Seals are fully qualified and comply with all API-682 technical design requirements.
Application Flexibility
A wide range of metallurgist, face combinations and packing materials are used to seal a variety of demanding applications.
Design Versatility
The Low-Temperature and High-Temperature Series seals are available as either single or dual shaft-mounted designs. For easier installation and higher reliability, they can be designed in a variety of cartridge arrangements.
Advanced Research and Development
The YongHua Bellows incorporate all the design features resulting from key engineering competencies, such as metallic thin shell methodology, tribology and fluid sealing technology, and thin film/fluid mechanics.