John Crane Type 2100 Replacement Mechanical Seal

Type 2100 Replacement Seal for Water Pumps

This elastomer bellows mechanical seal is offered as a replacement option for John Crane Type 2100 water-pump applications. Use the product photographs, drawing and size chart below to compare the rotating assembly and stationary seat with your existing seal. A model name or shaft diameter alone is not enough to confirm interchangeability.

Operating Range and Materials

These are the listed product limits, not a guarantee that every material combination can operate at all maximum values simultaneously. Confirm the selected configuration against the liquid, temperature, seal-chamber pressure and operating speed before ordering.

Dimensions to Check Before Ordering

• Shaft or sleeve diameter: measure the surface where the rotating seal is fitted.
• Installed working length: compare the required compressed assembly length with the pump drawing; do not substitute the free spring length.
• Stationary seat: check the seat outside diameter, thickness, mounting recess and secondary sealing arrangement.
• Available space: check the rotating assembly outside diameter and clearance within the seal chamber.

The drawing and dimension chart below provide a reference for comparison. Send a marked drawing or measurements when the existing seal differs, a dimension is unclear, or the pump has been modified.

Replacement References and Compatibility

Our existing product cross-reference lists John Crane Type 2100, AES B05, Flowserve 140, Sterling 540 and VULCAN 14DIN. Treat these as starting points for identification: seat variants, working lengths and material specifications must be checked for the actual pump. This listing describes a replacement option; the reference names do not establish original-brand manufacture or approval.

Request a Type 2100 Seal Quotation

Please provide the pump manufacturer and model, existing seal reference, shaft diameter, installation drawing or dimensions, clear photographs of both seal faces and the stationary seat, liquid and concentration, temperature, seal-chamber pressure, operating speed and quantity. Include the current face and elastomer materials if known.

Send your Type 2100 seal details for a quotation, or compare other models in our John Crane replacement seal selection guide and pump mechanical seal range.

Frequently Asked Questions

Is the same shaft diameter enough to select a replacement?

No. Check the working length, stationary seat dimensions, rotating assembly clearance and materials as well as shaft diameter.

Can every listed elastomer use the full temperature range?

No. Suitability depends on the specific elastomer grade, liquid and operating conditions. Request confirmation for the proposed combination.

What should I send if the old seal has no readable model number?

Send photographs, measured shaft and seat dimensions, the installation length and pump information. Include a drawing where available so the replacement can be checked before supply.