
Mechanical Seals
Chesterton mechanical seals are high-performance sealing solutions engineered to reduce equipment downtime, improve reliability, and extend the life of pumps and rotating machinery. Whether you need single or double seals, split or cartridge designs, Chesterton offers a versatile portfolio of mechanical seal options tailored to your operational requirements, helping facilities improve equipment efficiency and lower maintenance costs.
With over 140 years of experience, Chesterton has built a global reputation for delivering reliable, high-quality sealing solutions that meet the toughest industrial challenges. Serving a wide range of industries, Chesterton has a proven portfolio of mechanical seal technologies that improve equipment performance and reduce total cost of ownership. Backed by decades of field expertise and a commitment to innovation, Chesterton continues to set the standard for mechanical sealing technology.

Product Categories
Our Products


1510/1510L
General Duty Single Cartridge Seal

155

170

170L

180
Heavy Duty Single Cartridge Seal

1810
Heavy Duty Modular Single Cartridge Seal

225
Tandem Double Cartridge Seal

250/250L
General Purpose Double Cartridge Seal

2510
General Duty Double Cartridge Seal

255

280

2810

440/440M External Single Component Seal

4400
Accommodates Loss of Barrier Gas for Greater Sealing Reliability

442/442HP

442C

491 DIN Rotary Internal Single Seal (Global)
DIN Rotary Pusher Single Seal

891 Rotary Inside Single Seal

BSS Tank System
Buffer Support System for Double Seals

Flow Guardian™
Increase Operational Efficiency & Reduce Failures

Intelli-Flow™ HT

ISS

PSS Tank System
Barrier Support System for Double Seals

RBS Single Component Seal
For Sealing Where Axial Space is at a Premium

S10

S20
High Performance Cassette Tandem Double Seal

Self-Aligning Stationary Seal (SAS)

SpiralTrac®
