News
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Yokey Expands Dual-Hub Manufacturing Footprint with Operational Facility in Bac Ninh, Vietnam
Ningbo Yokey Precision Technology Co., Ltd. announces full operational readiness of its manufacturing entity, Yonghe Industrial Components Company Limited, in Bac Ninh Province, offering digital RFQ processing, direct sample dispatch, and localized precision sealing supply for industrial manufact...Read more -
CIP Fluid Dynamics in Hygienic Pump Seal Grooves: Eliminating Product Retention, Flow Shadowing, and Cleaning Dead Spots
Flow Dynamics at the Sealing Boundary: Why Micro-Recesses and Gland Cavities Trap Process Residue In sanitary and aseptic fluid transfer systems, an elastomer seal groove is never a purely static mechanical boundary. It operates simultaneously as a hydrodynamic interface, a thermal expansion reli...Read more -
China’s National Day Holiday Notice
As National Day approaches, Yokey would like to thank our customers and partners for their continued trust and cooperation. Holiday Schedule Yokey will observe a four-day National Day holiday from October 1 to October 4, 2026. During this period, response times for messages, order inquiries and r...Read more -
When a Filter-Housing Seal Leaks After Maintenance: Tracing Differential-Pressure and Disassembly Damage
Executive Summary: Reconstruct the Event Before Replacing the Seal This guide is for design, maintenance, reliability and quality engineers investigating a filter-housing leak that appears after differential-pressure exposure, opening, cleaning or reassembly. The first question is not whether the...Read more -
Pulsating Flow in Rotor-Pump Face Seals: How Interface-Film Changes May Contribute to Leakage
Executive Summary: What Should an Engineer Determine After Pulsation? For design, maintenance, reliability and failure-analysis engineers, the practical question is not whether a rotor pump shows pulsation, but whether the pulsation is changing the local face-seal condition and contributing to le...Read more -
Load Changes in Safety-Valve O-Rings During Repeated Lift Events
Executive Summary: What Should an Engineer Determine After Repeated Lift? When a safety valve repeatedly opens and reseats, maintenance, reliability and failure-analysis engineers face a specific question: has the event changed the load path at the actual O-ring interface, and could that change b...Read more -
Holiday Notice: Yokey’s Mid-Autumn Festival Holiday Schedule 2026
As the Mid-Autumn Festival approaches, Ningbo Yokey Precision Technology Co., Ltd. would like to extend warm seasonal greetings to our customers and partners around the world. A Brief Introduction to the Mid-Autumn Festival The Mid-Autumn Festival is a traditional occasion that symbolizes reunion...Read more -
Control-Valve Spool Dithering and Dynamic Seal Contact: Diagnosing Micro-Stroke Hunting, Fretting Degradation, and Interface Stability
Throttling Under Severe Pressure Drop: Why Micro-Stroke Dithering Destabilizes Dynamic Seal Contact For control-valve design, reliability, and maintenance engineers, modulating valve reliability hinges on dynamic seal integrity. In continuous process throttling, control valves often operate at lo...Read more -
Low-Flow Lubrication Instability in Metering-Pump Plunger Seals
Boundary Lubrication Dynamics in Reciprocating Metering Pumps: Why Low-Dosing Strokes Starve Plunger Seal Contacts In high-pressure positive-displacement metering pumps, reciprocating plunger seals operate across alternating acceleration and deceleration cycles where hydrodynamic fluid film gener...Read more -
Impact Fatigue and Backflow at Diaphragm-Pump Ball-Valve Seals
Executive Summary A changed flow response, pressure trace or suspected backflow in a diaphragm pump is a condition-dependent engineering observation. Repeated ball-to-seat seating events may alter contact conditions through local loading, surface damage or a change in how the ball settles. Simila...Read more -
Thermal-Cycling Response of Static Seals in Magnetic-Drive Pump Containment Shells
Executive Summary A changed sealing response after thermal cycling is a condition-dependent observation, not automatic proof of static-seal failure. Heating and cooling may change relative dimensions, contact pressure, compression retention, stress relaxation, fluid exposure, particle position, p...Read more -
Outgassing Changes in Clean-Equipment Seals After Low-Temperature Transport
Executive Summary A change in clean-equipment seal outgassing after low-temperature transport should initially be treated as a state- and measurement-dependent observation, not automatic proof of permanent seal damage. Cooling and storage may alter molecular mobility, moisture distribution, adsor...Read more