Spring Mechanical Seals – Reliable Sealing Solutions for Demanding Conditions 2026-03-09

Our spring mechanical seals deliver reliable sealing, adapt to extreme conditions, and offer stable, efficient performance for various industrial equipment.

API Plan 52 & Plan 53 Seal Support Systems 2026-03-07

We operate busy, high-volume production with strong orders. Strict quality control ensures reliable sealing solutions customers can trust worldwide.

Plan 21 & Plan 23 Heat Exchangers 2026-03-06

We are a trusted manufacturer with large-scale production capacity, supplying high-performance Plan 21 and Plan 23 heat exchangers for pumps worldwide.

Plan 32 Flushing System – Reliable Solution for High-Temperature Sealing 2026-03-04

Our Plan 32 Flushing System delivers stable external flushing for high‑temperature media over 300°C, ideal for safe and efficient mechanical seal protection.

Industrial Spring Mechanical Seals 2026-03-03

High-performance spring mechanical seals designed for durability, safety, and reliable operation in demanding industrial conditions.

Plan 21 & Plan 23 Heat Exchangers for Mechanical Seal Systems 2026-03-02

Our Plan 21 and Plan 23 heat exchangers protect mechanical seals in pumps and extend their service life

Plan 32 External Flushing System for High-Temperature Media 2026-02-28

Plan 32 is an external flushing system for high-temperature media over 300℃, using diesel or wax oil. It ensures stable and safe operation for your mechanical seals.

R550 Series Mechanical Seal 2026-02-26

With external spring structure, R550 excels in harsh, particle-laden and high-viscosity conditions where R8 & R45 series seals cannot perform well.

High-Efficiency Carbon Steel Heat Exchanger for Seal Cooling 2026-02-11

RHRL series heat exchangers are designed for mechanical seals, effectively cooling high-temperature media to protect seals and ensure stable, reliable operation with extended service life.

Multiple Spring Mechanical Seal 2026-02-10

This multiple spring mechanical seal reliably seals clean or low-particle media. It features uniform load, low friction, maximized sealing area and easy installation for pumps and rotating equipment.

Seal Support Systems: Extend Seal Life & Cut Downtime | API Plan 52 & 53 2026-02-09

Dandong Runhe Seal Co., Ltd is a Chinese famous manufacturer of mechanical seals and Seal Support Systems for rotating equipment such as pumps, compressors, reactors, agitators, mixers, etc. integrating design, R&D, manufacturing, sales and service. We provide custom solutions, reliable quality, and global support.

Plan52: The Critical Support for Tandem Mechanical Seals 2026-02-07

Plan 52 is designed for tandem mechanical seals handling volatile, toxic hydrocarbons. It detects leakage via accumulator level and safely discharges leaked media through the exhaust line.