Chesterton supplier in Romania
Mechanical seals and packings for industrial pumps
Founded in 1884 · Headquarters: Groveland, Massachusetts, USA
Who is Chesterton and what does it make?
A.W. Chesterton Company is an American manufacturer of mechanical seals, packings and gaskets for pumps, mixers and agitators, headquartered in Groveland, Massachusetts, and active since 1884. From the Chesterton range we can quote split mechanical seals (installable without completely dismantling the pump), cartridge seals, gas seals and seals for media containing solids (slurry), plus classic packings and gaskets for stuffing boxes. The company also produces industrial lubricants and industrial coatings under the ARC brand.
Chesterton offers industrial seals and gaskets, with an emphasis on mechanical seals for rotary pumps, where split seals are designed specifically to be installed without removing the shaft from the bearings — a clear advantage for repairs with a short shutdown time. Certain products hold NSF/ANSI 61 certification, relevant for equipment that comes into contact with drinking water.
For installations in Romania, the Chesterton range makes sense at pumping stations in energy, chemicals and water treatment, where a quickly installed seal, without completely dismantling the pump, reduces plant downtime during a planned or emergency intervention.
What do we supply from the Chesterton range?
| Product | Description |
|---|---|
| Split Mechanical Seals | Mechanical seals designed to be fitted on the shaft without completely dismantling the pump or mixer, useful on large equipment where removing the shaft would mean extra hours of downtime. Frequently used on process pumps in power plants and refineries. |
| Cartridge Seals | Mechanical seals pre-assembled as a complete unit, fitted directly on the shaft without additional adjustments at installation. They reduce the risk of incorrect assembly compared with a seal made of separate components, useful for maintenance teams without extensive experience with seals. |
| Gas Seals and Seals for Media with Solids (Slurry) | Dedicated mechanical seals for compressors and gas pumps, and for pumps handling fluids containing solid particles, where a standard seal would wear out quickly. Chosen according to the exact composition of the medium handled. |
| Packings and Gaskets for Stuffing Boxes | Classic packings of woven or braided fibres, for the stuffing boxes of pumps and mixers where a mechanical seal is not necessary or not economically justified. They remain the standard solution on many older pumps in industrial installations. |
| ARC Industrial Coatings | Industrial coatings resistant to corrosion and abrasion, applied on pump casings, impellers and pipes to extend the service life of equipment exposed to aggressive environments. |
Why Chesterton?
- Split mechanical seals, installable without completely dismantling the pump — they reduce downtime during repairs
- Range of seals — split, cartridge, gas and slurry — for different process media
- NSF/ANSI 61 certification for certain products that come into contact with drinking water
- Local technical support in several regions of the world, according to the manufacturer's documentation
- Over 140 years of experience in industrial seals for pumps and mixers
Which Chesterton codes and series are requested most often?
| Code | Description |
|---|---|
| 150/150L | General-purpose cartridge mechanical seal, single face |
| 1510/1510L | Variant of the 150 cartridge seal for similar conditions |
| 180 | Robust cartridge seal for demanding applications |
| 225 | Double cartridge seal, tandem type |
| 255 | Double cartridge seal for intermediate applications |
| 280 | Double cartridge seal for heavy duty |
| 442/442HP | Split mechanical seal, installable without removing the shaft |
| 491 | Rotary seal with a single internal component |
| 4400 | Double gas seal, concentric configuration |
| 170/170L | Seal for pumps handling abrasive media |
| 1725A | Fibre packing for pumps and mixers |
| 1727 Multi-Lon | Multifilament packing for pumps and mixers |
| 1730 Mill Pack | General-purpose packing, glazing-resistant |
| 5800 | Graphite sealing rings for valves, with low friction |
| 6800 | Sealing set for control valves, with low emissions and low friction |
| 455 | Flat sheet gasket for industrial flanges |
| 5500 | Live-loading system for flanges, for high reliability |
| 22K | Polymer seal for hydraulic rods and pistons |
Where is Chesterton equipment used?
- Energy — pumps for fossil fuel, nuclear and geothermal plants
- Oil and gas — seals for process pumps and compressors
- Chemicals and petrochemicals — seals for corrosive fluids and refining
- Food industry — compliant seals for processing pumps
- Mining — seals for slurry pumps and abrasive media
- Paper industry — seals for process pumps in pulp mills
- Marine — seals and packings for shipboard pumps
How do we supply Chesterton in Romania?
The information about Chesterton comes from the technical documentation of the American manufacturer, and where the documentation does not detail a technical parameter, we state the exact value in the quotation. We supply Chesterton seals made to order through EU supply channels, usually in 1–4 weeks from confirmation. For a precise quotation, send us the type of seal sought, the shaft diameter, the working pressure and temperature, plus the fluid handled — parameters without which we cannot recommend the correct variant. We do not hold stock for all references in the range, so availability is confirmed separately for each order.
On-site interventions and installation training for Chesterton seals remain with the manufacturer's own network.
Frequently asked questions about Chesterton
What is the difference between Chesterton 225 and 442 seals?
The 225 series is a double cartridge seal, designed for general use in centrifugal pumps, where both sealing faces sit inside the pre-assembled cartridge. The 442 series is a split-type seal, fitted around the shaft without the need to completely dismantle the pump or the coupling. The choice depends on the time available for the intervention and on access to the pump shaft.
What is the Chesterton 1727 Multi-Lon packing?
The 1727 Multi-Lon is a multifilament packing used to seal pump and mixer shafts, where a mechanical seal is not necessary or not practical. It consists of braided rings fitted in the stuffing box, tightened gradually to control the permitted leakage. The choice of material and number of rings depends on the medium handled and the shaft speed.
Do you supply Chesterton seals in Romania?
Yes, we source Chesterton seals and packings on request, starting from the code of the model wanted, without stock built up in advance. On order, usually 1–4 weeks from order confirmation (Chesterton). We recommend sending the shaft diameter and the medium handled to identify the correct variant.
What do I need to provide for a Chesterton mechanical seal quotation?
The size of the seal chamber, the shaft diameter, the pressure and temperature of the medium handled and whether the liquid contains abrasive particles are all important. For pumps that cannot be stopped for long for an intervention, a split-type seal such as the 442 series may be more suitable than a classic cartridge. Construction materials compatible with the chemical medium complete the data needed.
How do I request a Chesterton quotation?
Send the Chesterton code from the nameplate and the quantity; we reply in English with availability and the lead time written in the quotation.
Request a quoteUpdated: 12 November 2026 · Sources: Chesterton, A.W. Chesterton Company (manufacturer documentation)