High-Performance Expansion Sealing Plugs

Name: High-Performance Expansion Sealing Plugs
Brand: YF Zhichengjia
SKU: ZCJ-1716
Availability: InStock

Product Description Our expansion sealing plugs utilize a precision-engineered pull-to-expand mechanism to achieve superior leak-proof integrity. Designed for the permanent closure of process holes, these plugs create a high-pressure inter...

Technical Consulting

Contact YF Zhichengjia

Product Overview

The expansion plug uses a pull-expansion structure that makes the plug body expand radially inside the hole and form an interference fit with the hole wall, achieving highly reliable sealing up to IP68. Used for permanent plugging of process and test holes, it provides one-time permanent sealing, long-term maintenance-free with no repeated removal, suiting locations with high demands for long-term sealing reliability.

Technical Features

Expansion sealing creates an interference fit against the hole wall.
Sealing rating IP68, resistant to water pressure and dust ingress.
One-time permanent sealing, long-term maintenance-free.
No mating thread required, easing the demands on hole-wall machining
Carbon steel / stainless steel options for different corrosion-resistance grades.

Technical Specifications

Material	Carbon steel / stainless steel (optional)
Surface treatment	Zinc plating / passivation (optional)
Standard	Per customer drawing / company standard; Sealing rating IP68 (IEC 60529)
Application	Permanent plugs for process / test holes
Seal principle	Pull-to-expand interference seal
Pressure rating	High-pressure process-hole closure
Hole range	Custom bore diameters on request
Seal & service	All-metal expansion seal; working pressure up to approx. 300–500 bar by size, service temp about −40 to +100 °C (up to +150 °C on selected series), per customer drawing/test