Jiaxing Burgmann Mechanical Seal Co., Ltd. Jiashan King Kong Branch
| Payment Terms | T/T, Western Union, MoneyGram |
| Supply Ability | 1000PCS |
| Delivery Time | 3~10DAYS |
| Packaging Details | white box |
| Product name | Replace John Crane 2100 Seal |
| Feature | Rubber Bellows Mechanical Seal |
| Application | Chemical pumps / water pumps |
| Shaft diameter | 16~120mm |
| Temperature | -20~150°C |
| Pressure | up to 1.2Mpa |
| Brand Name | JG |
| Model Number | Replace John Crane 2100 |
| Certification | FDA certificate |
| Place of Origin | Zhejiang, China |
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Product Specification
| Payment Terms | T/T, Western Union, MoneyGram | Supply Ability | 1000PCS |
| Delivery Time | 3~10DAYS | Packaging Details | white box |
| Product name | Replace John Crane 2100 Seal | Feature | Rubber Bellows Mechanical Seal |
| Application | Chemical pumps / water pumps | Shaft diameter | 16~120mm |
| Temperature | -20~150°C | Pressure | up to 1.2Mpa |
| Brand Name | JG | Model Number | Replace John Crane 2100 |
| Certification | FDA certificate | Place of Origin | Zhejiang, China |
| High Light | John Crane 2100 Mechanical Seal ，Shaft Diameter 16-120mm Mechanical Seal ，16-120mm Rubber Bellows Mechanical Seal | ||
Rubber Bellows Mechanical Seal Replace John Crane 2100
The John Crane 2100 equivalent mechanical seal features an elastomer bellows design, offering reliable performance for pumps in industrial, chemical, and water treatment applications. It is available with carbon or silicon carbide (SiC) sealing faces for enhanced wear resistance and supports NBR, FKM, or EPDM elastomers for compatibility with various media (oils, water, acids, and steam). The seal operates under pressures up to 10 bar (1.0 MPa) and temperatures ranging from -20°C to +150°C (extendable with FKM). Constructed with stainless steel (304/316) metal parts, it ensures corrosion resistance and durability. Proper installation with recommended adhesives (e.g., Permatex #3) guarantees leak-free operation. Suitable for shaft diameters of 16–120mm, it serves as a cost-effective replacement for OEM seals in centrifugal pumps and agitators.
Operating Limited:
| Shaft diameter | 16~120mm |
| Pressure | up to 1.2Mpa |
| Temperature | -20~150°C |
| Slidingvelocity | 10m/s |
Material:
| Rotary Ring | Car / SIC/TC/Cer |
| O-Ring | , EPDM, NBR, AFLAS, Kalrez,PTFE |
| Spring and Metal Parts | SUS304, SUS316 |
| Stationary Ring | Car / SIC /TC/Cer |
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
A: This seal features a flexible elastomer bellows design, ensuring superior axial movement compensation and vibration resistance. Its carbon or silicon carbide (SiC) sealing faces provide excellent wear resistance, while NBR/FKM/EPDM elastomers offer broad chemical compatibility, making it ideal for harsh industrial environments.
A: It operates reliably under pressures up to 10 bar (1.0 MPa) and temperatures from -20°C to +150°C (extendable to 200°C+ with FKM bellows), ensuring performance in demanding applications like hot water, steam, or chemical processing.
A:
NBR (Nitrile): Best for oils, water, and mild chemicals.
FKM (Fluorocarbon): Resistant to acids, fuels, and high temps.
EPDM: Ideal for steam, hot water, and alkaline solutions.
Seal Faces: Choose carbon (economical) or SiC (high wear resistance).
A: Yes, it’s a direct replacement for John Crane 2100 seals, matching dimensions (16–120mm shaft sizes) and performance standards while offering cost savings without compromising quality.
A:
Use Permatex #3 sealant for easy disassembly or Three Bond 1184 for stronger adhesion.
Follow manufacturer-specified compression levels to avoid over-tightening.
Inspect the seal cavity post-installation for leaks (check shift lever area).
A: It’s widely applied in:
Chemical pumps (acid/alkali resistance with FKM/EPDM).
Water treatment & HVAC systems (NBR for general use).
Food processing (EPDM for steam cleaning compatibility).
Company Details
Business Type:
Manufacturer,Exporter,Trading Company,Seller
Year Established:
1992
Total Annual:
10milion-15milion
Employee Number:
80~100
Ecer Certification：
Verified Supplier
JIAXING BURGMANN is a professional manufacturer of mechanical seal for pump and autoclave used in the mining, industry, agriculture, flange, rubber ring, bushing, hard alloy and Sic. We are specialized in producing Burgmann series seals. We have over 20 years production experience, wit... JIAXING BURGMANN is a professional manufacturer of mechanical seal for pump and autoclave used in the mining, industry, agriculture, flange, rubber ring, bushing, hard alloy and Sic. We are specialized in producing Burgmann series seals. We have over 20 years production experience, wit...
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