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

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John crane replacement

Crane Type 1 PTFE Wedge Dual Mechanical Seal

Elastomer Mechanical Shaft Seals for Vacuum Pump Copy
Elastomer Mechanical Shaft Seals for Vacuum Pump Copy
Elastomer Mechanical Shaft Seals for Vacuum Pump Copy
thumb Elastomer Mechanical Shaft Seals for Vacuum Pump Copy
Elastomer Mechanical Shaft Seals for Vacuum Pump Copy
Elastomer Mechanical Shaft Seals for Vacuum Pump Copy

Crane Type 1 PTFE Wedge Dual Mechanical Seal

• Self-Aligning: The Type 1's full-convolution design (modified for wedge) retains excellent self-alignment capabilities, handling shaft deflection better than standard wedge seals.

• Custom Gland: Supplied with a custom-machined gland plate to house the dual seal assembly within standard pump dimensions.

Model:1
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Key Features

• Dual Safety: A tandem or back-to-back arrangement utilizing the robust Type 1 drive architecture but upgraded with PTFE wedges for chemical service.

• Heavy Duty Spring: The large non-clogging coil spring of the Type 1 ensures reliable operation even in viscous chemical slurries.

• Barrier Fluid Compatible: Designed to work with API Plan 52 or 53 systems to provide lubrication and cooling.



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


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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
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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

Resin Plant: A resin pump required a double seal but had high viscosity issues clogging small springs. We used this Type 1 Dual Wedge Seal. The large spring handled the torque and viscosity, and the PTFE resisted the solvent flush.

Testimonials

Robust and chemically resistant. The big spring doesn't gum up like multi-spring seals do in our process.

—Plant Manager, Resin Manufacturer



FAQs about Metal Bellows Seals for High Temperature Pumps

Q: Why modify a Type 1 with a wedge?

A: The Type 1 is famous for its non-clogging spring. By adding a PTFE wedge, we combine that mechanical robustness with the chemical resistance needed for harsh solvents.

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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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