mobile search button of img

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

Home
By Type
Cartridge Mechanical Seals

Double Acting Cartridge Mechanical Seal for Caustic Pump

Double Acting Cartridge Mechanical Seal for Caustic Pump
thumb Double Acting Cartridge Mechanical Seal for Caustic Pump

Double Acting Cartridge Mechanical Seal for Caustic Pump

• Integrated Pumping Ring: Circulates barrier fluid to remove heat efficiently.

• Stationary Springs: Isolated from rotation to prevent distortion at high speeds.

Model:365
WhatsApp Now
WHAT ARE YOU LOOKING FOR?
*
This field is required
Total quantity you need
*
This field is required
*
This field is required
Email format error
Due to email instability, you might miss our correspondence. Please provide your phone number for alternative contact.
This field is required
Telephone information is wrong!
Send Message

Key Features

• Zero Emission Guarantee: Barrier fluid contains all leaks, protecting personnel and environment.

• Caustic Resistant Materials: Sintered SiC and FFKM options available to resist high pH attack.

• API Compliant: Fits API Plan 52/53A/54 piping systems.



Technical Specs

Materials

Mediums

Chemical, Food, Oil, Petroleum, Pharmaceuticals Paper and pulp, Sewage treatment

Stationary Ring

Carbon/Sic/Ssic/TC

Temperature

Elastomer Dependent

Rotary Ring

Sic/Ssic/TC

Pressure

≤2.8MPa

Secondary Seal

Viton/EPDM/Chemraz/Kalrez/Aflas, etc.

Speed

≤25m/s

Spring and Metal Part

Stainless Steel/Hast C


CF365-1.jpg
CF365-2.jpg



Product Specifications

D1 (mm) D2 D3 D5 L1 L2 L3 L5
25 44.5 104 12.5 35 54 24 62
28 47.5 104 12.5 35 54 24 62
30 49.5 104 12.5 35 54 24 67
32 51.5 104 12.5 35 54 24 67
33 51.5 104 12.5 35 54 24 67
35 54.5 110 12.5 35 54 24 70
38 57.5 125 14.7 35 54 24 75
40 59.5 125 14.7 35 54 24 75
42 61.5 133 14.7 35 54 24 80
43 62.5 133 14.7 35 54 24 80
45 64.5 140 14.7 35 54 24 82
48 67.5 140 14.7 35 54 24 82
50 69.5 140 14.7 35 54 24 87
53 72.5 150 17.5 35 54 24 92
55 74.5 150 17.5 35 54 24 92
60 79.5 160 17.5 35 54 24 100
65 84.5 165 17.5 35 54 24 105
70 89.5 180 17.5 35 54 24 120
75 102 190 17.5 39 58 26 125
80 107 190 17.5 39 58 26 130
85 112 220 21.5 39 58 26 135
90 117 220 21.5 39 58 26 140
95 122 220 21.5 39 58 26 145
100 127 220 21.5 39 58 26 150


D1 (inch) D2 D3 D5 L1 L2 L3 L5
1.000 1.752 4.094 0.492 1.378 2.126 0.984 2.441
1.125 1.870 4.094 0.492 1.378 2.126 0.984 2.441
1.250 2.027 4.094 0.492 1.378 2.126 0.984 2.638
1.375 2.146 4.331 0.492 1.378 2.126 0.984 2.756
1.500 2.264 4.921 0.579 1.378 2.126 0.984 2.953
1.625 2.421 5.236 0.579 1.378 2.126 0.984 3.150
1.750 2.539 5.512 0.579 1.378 2.126 0.984 3.228
1.875 2.657 5.512 0.579 1.378 2.126 0.984 3.228
2.000 2.736 5.906 0.579 1.378 2.126 0.984 3.425
2.125 2.854 6.102 0.689 1.378 2.126 0.984 3.622
2.250 3.051 6.299 0.689 1.378 2.126 0.984 3.937
2.375 3.130 6.469 0.689 1.378 2.126 0.984 3.937
2.500 3.248 6.693 0.689 1.378 2.126 0.984 4.055
2.625 3.445 7.067 0.689 1.378 2.126 0.984 4.724
2.750 3.523 7.480 0.689 1.378 2.126 0.984 4.724
2.875 3.937 7.480 0.689 1.535 2.283 1.181 4.843
3.000 4.016 7.480 0.689 1.535 2.283 1.181 4.921
3.125 4.213 8.661 0.689 1.535 2.283 1.181 5.118
3.250 4.331 8.661 0.846 1.535 2.283 1.181 5.236
3.375 4.410 8.661 0.846 1.535 2.283 1.181 5.315
3.500 4.607 8.661 0.846 1.535 2.283 1.181 5.512
3.625 4.685 8.661 0.846 1.535 2.283 1.181 5.591
3.750 4.804 8.661 0.846 1.535 2.283 1.181 5.709
3.875 5.000 8.661 0.846 1.535 2.283 1.181 5.906
4.000 5.000 8.661 0.846 1.535 2.283 1.181 5.906



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

Chemical Plant Retrofit: 50% Caustic Soda pumps leaked at a chemical facility. We retrofitted with our Double Acting Seal + Plan 53A. Zero leakage achieved, and safety violations were eliminated.

Testimonials

We use these for our sodium hydroxide transfer pumps. The double seal gives us peace of mind knowing that no hazardous chemical can escape.

—HSE Manager, Chemical Processing Plant



FAQs about Metal Bellows Seals for High Temperature Pumps

Q: Do I need an external reservoir tank for this seal?

A: Yes, a double-acting seal typically requires an API Plan 52 (unpressurized) or Plan 53A (pressurized) reservoir system. This tank supplies the barrier fluid that lubricates the seal faces and carries away heat. We can supply the complete package including the tank and instrumentation.

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!
    bottom_logo

    Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.

    CopyRight © 2026 NINGBO MIAOYU MACHINERY TECHNOLOGY CO., LTD All rights reserved Sitemap  All tags  Designed by Zhonghuan Internet
    Get Your Custom Seal Solution Quote
    Tell us your sealing requirements (working conditions, media, dimensions, etc.), and our engineers will provide a tailored solution and quote within 24 hours. Your inquiry is 100% confidential.
    Company Name
    *
    This field is required
    Email
    *
    This field is required
    Email format error
    Phone
    This field is required
    Telephone information is wrong!
    Message
    *
    This field is required
    Send Message