• Torque Transmission: The bellow itself transmits torque, eliminating drive pins and protecting the shaft from wear.
• Modular Design: Meets DIN 24960 and ISO 3069 standards, making it a universal fit for modern metric pumps.
Key Features
• Compact & Robust: A direct replacement for the John crane 2100 mechanical seal, known for its compact single-spring design and durability.
• One-Piece Bellows: Features a robust, single-piece elastomer bellow that provides maximum flexibility and grip on the shaft.
• Heavy Duty: Capable of handling higher pressures and speeds than standard Type 21 seals due to its robust geometry.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤1.0MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 120℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤15m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| Metric Shaft Size D1 | Size Code | D3 | D7 | L1 | L4 |
| 12 | 0120 | 21.70 | 23.00 | 24.10 | 8.60 |
| 14 | 0140 | 24.50 | 25.00 | 26.60 | 8.60 |
| 16 | 0160 | 26.65 | 27.00 | 26.60 | 8.60 |
| 18 | 0180 | 30.35 | 33.00 | 27.70 | 10.00 |
| 20 | 0200 | 33.40 | 35.00 | 27.70 | 10.00 |
| 22 | 0220 | 33.55 | 37.00 | 27.70 | 10.00 |
| 24 | 0240 | 38.30 | 39.00 | 30.20 | 10.00 |
| 25 | 0250 | 39.30 | 40.00 | 30.20 | 10.00 |
| 28 | 0280 | 42.20 | 43.00 | 32.70 | 10.00 |
| 30 | 0300 | 43.95 | 45.00 | 32.70 | 10.00 |
| 32 | 0320 | 45.75 | 48.00 | 32.70 | 10.00 |
| 33 | 0330 | 45.85 | 48.00 | 32.70 | 10.00 |
| 35 | 0350 | 19.10 | 50.00 | 32.70 | 10.00 |
| 38 | 0380 | 52.60 | 56.00 | 34.20 | 11.00 |
| 40 | 0400 | 55.70 | 58.00 | 34.20 | 11.00 |
| 43 | 0430 | 58.80 | 61.00 | 34.20 | 11.00 |
| 45 | 0450 | 61.00 | 63.00 | 34.20 | 11.00 |
| 48 | 0480 | 64.20 | 66.00 | 34.20 | 11.00 |
| 50 | 0500 | 66.60 | 70.00 | 34.70 | 13.00 |
| 55 | 0550 | 71.65 | 75.00 | 34.70 | 13.00 |
| 58 | 0580 | 78.40 | 78.00 | 39.70 | 13.00 |
| 60 | 0600 | 78.40 | 80.00 | 39.70 | 13.00 |
| 63 | 0630 | 81.50 | 83.00 | 39.70 | 13.00 |
| 65 | 0650 | 84.30 | 85.00 | 39.70 | 13.00 |
| 68 | 0680 | 89.65 | 90.00 | 37.40 | 15.30 |
| 70 | 0700 | 89.65 | 92.00 | 44.90 | 15.30 |
| 75 | 0750 | 96.80 | 97.00 | 44.90 | 15.30 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.
Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All john crane 2100 mechanical seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.
Industry Solutions
Case Study
Waste Treatment: Submersible mixers in a treatment plant were failing due to ragging. We installed the john crane 2100 mechanical seal. Its smooth profile resisted debris accumulation, and the robust bellow handled the shaft deflection.
Testimonials
A perfect fit for our Grundfos and KSB pumps. The john crane 2100 mechanical seal design is much tougher than the older seals.
—Service Manager, Pump Repair
FAQs about John Crane 2100 Mechanical Seal Replacement
Q: Is this a direct OEM replacement for the John Crane Type 2100?
A: Yes. This seal is designed as a direct interchangeable replacement for the OEM john crane 2100 mechanical seal. It matches the original dimensions (typically covering shaft sizes from 16mm to 120mm) and performance specifications, ensuring a drop-in fit for standard pump models without requiring modifications.
Q: Does this fit metric shafts?
A: Yes, the john crane 2100 mechanical seal is primarily a metric seal designed to DIN standards, covering sizes from 10mm to 100mm.
Q: How do I ensure a leak-free installation?
A:
• Cleanliness: The sealing faces must be absolutely clean and free of dust or grease before installation.
* Lubrication: Lightly lubricate the shaft and O-rings with a compatible grease (e.g., silicone-based) to prevent damage during sliding.
* Compression: Avoid over-tightening the set screws. Ensure the bellows is not twisted and the seal is seated squarely. Always perform a static pressure test and hand-rotate the shaft before startup to check for binding.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
