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NINGBO MIAOYU MACHINERY TECHNOLOGY CO., LTDNINGBO MIAOYU MACHINERY TECHNOLOGY CO., LTD

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John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement

John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
thumb John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement
John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement

John Crane Type 1 O-Ring Pusher Mechanical Seals Replacement

• Robust Drive: The large single coil spring grips the shaft for positive drive, but the sealing is handled by a precision O-ring, offering a hybrid of robustness and high-pressure capability.

• Non-Clogging: The large spring resists fouling.

Model:1
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Key Features

• Type 1 with O-Ring: A variation of the classic Type 1 that utilizes an O-ring secondary seal instead of the traditional elastomer bellow.

• High Pressure: The O-ring design is more robust against high pressure spikes than a rubber bellow.

• Universal Fit: Retains the standard Type 1 drive mechanism and dimensions for easy retrofitting.



Technical Specs

Materials

Mediums

Water, oil and weakly-corrosive mediums

Stationary Ring

Ceramic/Sic/TC

Pressure

≤1.4MPa

Rotary Ring

Carbon/Sic/TC

Temperature

-20C to 120C

Secondary Seal

NBR/EPDM/Viton

Speed

≤15m/s

Spring and Metal Part

Stainless Steel


CF1-1.jpg
CF1-2.jpg



Product Specifications

D1 (inch) Size Code D1 (mm) Size Code D3 D7 L1 L4
0.500 0127 12 0120 23.80 25.40 30.16 7.93
14 0140 27.76 31.75 33.32 10.30
0.625 0158 16 0160 27.76 31.75 33.32 10.30
0.750 0191 18 0180 30.94 34.93 33.32 10.30
20 0200 34.11 38.10 34.93 10.30
0.875 0222 22 0220 34.11 38.10 34.93 10.30
24 0240 38.10 41.28 39.67 11.10
1.000 0254 25 0250 38.10 41.28 39.67 11.10
1.125 0286 28 0280 41.28 44.44 41.28 11.10
30 0300 46.02 47.63 41.28 11.10
1.250 0317 32 0320 46.02 47.63 41.28 11.10
33 0330 48.68 50.80 42.85 11.10
1.375 0349 35 0350 48.68 50.80 42.85 11.10
1.500 0381 38 0380 51.85 53.98 42.85 11.10
1.625 0412 40 0400 58.10 60.38 50.80 12.70
43 0430 61.27 63.50 50.80 12.70
1.750 0444 45 0450 61.27 63.50 50.80 12.70
1.875 0476 48 0480 64.44 66.68 53.98 12.70
2.000 0508 50 0500 67.21 69.85 53.98 12.70
2.125 0539 53 0530 72.02 76.20 60.33 14.28
2.250 0571 55 0550 75.30 79.38 60.33 14.28
2.375 0603 60 0600 78.30 82.55 63.50 14.28
2.500 0635 63 0630 81.54 85.73 63.50 14.28
2.625 0666 65 0650 86.22 85.73 69.85 15.90
2.750 0698 70 0700 89.40 88.90 73.03 15.90
2.875 0730 73 0730 92.57 95.25 73.03 15.90
3.000 0762 75 0750 95.75 98.43 73.03 15.90



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.


Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606



Product Research, Development and Testing

Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.


R&D and Design.jpg
microscope.jpg
Light band detection.jpg
pressure test.jpg



Industry Solutions

Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606




Case Study

Hydraulic Oil Pump: A standard bellow seal was rupturing under pressure spikes. We installed this Type 1 O-Ring Pusher. The O-ring handled the pressure, and the spring provided the necessary torque transmission.

Testimonials

A tough seal. We use it where standard bellow seals blow out.

—Hydraulic Repair Shop, USA



FAQs about Metal Bellows Seals for High Temperature Pumps

Q: Is this a Type 8-1?

A: No, Type 8-1 is a multi-spring O-ring seal. This is a single spring O-ring seal, keeping the non-clogging benefit of the Type 1 but with O-ring sealing.

Please Contact Us!
Get Started With Your Next Project.
If you have any questions about our products and services, please feel free to contact us. Our team will get in touch with you within 24 hours!
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    Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.

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