Replace John Crane 2100

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Jiaxing Burgmann Mechanical Seal Co., Ltd. Jiashan King Kong Branch

City: jiaxing

Province/State:zhejiang

Country/Region:china

Tel:86-0573-84133388

Contact Person:
Mrs.Doris Sun View Contact Details

Replace John Crane 2100

Brand Name	JG
Model Number	Replace John Crane 2100
Certification	FDA certificate
Place of Origin	Zhejiang, China
Minimum Order Quantity	1pcs
Price	USD8.75- 9.75 / 10 set
Payment Terms	T/T,Western Union,MoneyGram
Supply Ability	1000PCS
Delivery Time	3~10DAYS
Packaging Details	white box
Product name	Replace John Crane 2100
Feature	Mechanical Seal
Shaft diameter	10 mm – 100 mm (0.375″ – 4.00″)
Application	Chemical pumps
Pressure	≤ 1.6 MPa (230 psi / 16 bar)
Temperature	-20~150°C

Detailed Product Description

Replace John Crane 2100

In the field of industrial pump maintenance, sourcing a high-quality replacement for the John Crane Type 2100 is not only about cost reduction—it is about enhancing system reliability. Our replacement series is specifically designed to address the performance of the original 2100 model under demanding service conditions:

100% Drop-in Compatibility: Strict adherence to OEM shaft diameter, installed length, and seal face dimensions ensures direct installation without any mechanical modification.
Non-Clogging Construction: The single-spring and rubber bellows design is retained and optimized, effectively preventing spring failure when handling fluids containing impurities or solids.
Enhanced Service Life: Compared to standard parts, we select higher-purity premium silicon carbide (SiC) and imported elastomer materials to extend Mean Time Between Failures (MTBF) under frequent start-stop cycles.

Technical Specifications

The following parameters strictly conform to industrial mechanical seal standards.

Technical Feature	Specification Details
Compatible Models	John Crane Type 2100 / 2100S / 2100N
Shaft Diameter Range	10 mm - 100 mm (0.375″ - 4.00″)
Max Pressure	≤ 1.6 MPa (230 psi / 16 bar)
Temperature Range	-40 °C to +150 °C (depending on elastomer material)
Linear Velocity	≤ 15 m/s (3,000 fpm)
Face Materials	Carbon, Silicon Carbide, Tungsten Carbide
Elastomers	NBR (standard), EPDM (water service), Viton/FKM (chemical service)
Metal Parts	SS304 / SS316 high-grade stainless steel

Advantages

Spring unit averted from the product so no sticking and clogging of the springs
Safe operation (no fractures) because of seal face locking by square pin
Suitable for pressure reversals
Operation in vacuum without additional seat locking possible
No damage of the shaft by a dynamically loaded O-Ring
Small installation sizes
Best suitable for conversions, no adaptations of the pump
Insensitive to solid containing and abrasive media
Advantages of a balanced seal even with plain shafts
Insensitive to shaft movements because of the stationary design

Application

Water and waste water technology
Chemical industry
Refining technology
Dirty, abrasive and solid containing media
Fugitive hydrocarbons (no API seal!)
Sticky and stringy media
Chemical standard pumps
Sewage pumps

Shipping & Payment Terms

Port of Loading: Shanghai

Shipping Method: DHL, UPS, FEDEX, TNT, etc

Payment Terms: T/T, Western Union, Money Gram

Our Services

OEM/ODM orders are available for our factory
Accept customized mechanical seals according to your drawing or requirements
Small quantity is accepted
Provides excellent quality with competitive price

Technical FAQ: Replacing John Crane Type 2100

Q1: Is your replacement part dimensionally identical to the genuine John Crane Type 2100?

Yes. Our design fully conforms to DIN 24960 (EN 12756) and ISO 3069. This means that the installed height (L1k) and the stationary seat fit tolerances are a 1:1 match with the original 2100 series, delivering a "zero-error" replacement.

Q2: How do I confirm the correct rubber bellows material when selecting a replacement?

Material selection depends on your pumped media. To demonstrate trustworthiness, we recommend:

Municipal water / HVAC systems: Choose EPDM, which offers excellent hot water resistance.
Oily wastewater / general industrial service: Choose NBR (nitrile) for good oil resistance.
Aggressive / high-temperature chemical service: You must select Viton (FKM) to prevent swelling or cracking of the bellows due to chemical attack.

Q3: Why does this replacement better protect my pump shaft?

As with the original design, our 2100 replacement is driven by friction via the rubber bellows. Because the bellows does not slide relative to the shaft, it avoids the severe grooving or wear on the shaft surface that can occur with traditional O-ring seals. This saves you the expensive cost of replacing the pump shaft or shaft sleeve.

Q4: How does this replacement perform when handling viscous media?

Thanks to the large-pitch single spring (non-clogging single spring) design, this replacement offers significantly better clogging resistance than multi-spring seals when handling sewage, pulp, or mildly viscous media. It is a classic "ruggedized" design, well suited for a wide range of harsh industrial environments.

Product Tags: John Crane 2100 water pump seal replaceable water pump seal industrial water pump seal

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