| Customization: | Available |
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| Structure: | Single End |
| Pressure: | High Pressure Mechanical Seals |
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(1) Features
•Double seal
•Mtex-DN: API Plan 52 (53/54)
•Mtex9-DN: API Plan 53/54
•Cartridge
•Balanced
•Independent of direction of rotation
•Metal bellows
•Stationary O-Ring
•Pumping device independent of direction of rotation
(2) Advantages
•Ideal seal for standardizations
•Universal applicable for packings conversions, retrofits or OEM
•Suitable for high temperature
•No dimensional modification of the seal chamber necessary, small radial installation height
•Trouble-free running due to bellows unit with vibration dampers (essential in case of dry-running)
•No damage of the shaft by dynamically loaded O-Ring
•Self cleaning effect of the bellows
•Installation faults are avoided, cost-effective
•No damage caused by dirt entered during assembly
•Straightforward and easy installation due to preassembled unit (reduced down-times)
•Individual adaptation to pump design possible
(3) Operating range (see note on page 1)
Shaft diameter: d1 = 25 ... 80 mm (1"...3.15")
Temperature: t* = -40 °C ... +220 °C (-40 °F...+428 °F)
Pressure: p1 = 25 bar (232 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)
Barrier fluid circulation system:
p3max = 16 bar (232 PSI)
Δp (p3 - p1) ideal = 2 ... 3 bar (29...44 PSI)
Δp (p3 - p1) max. = 10 bar (145 PSI) at < 120 °C
(< 248 °F), = 5 bar (73 PSI) at ≤ 220 °C (≤ 232 °F)
API Plan 52 (53/54)
Pump startup:
Δp (p3 - p1) max = 16 bar (232 PSI) allowed
* Operating limits of O-Rings to be observed
(4) Item Description
1 Bellows unit
2, 5, 7, 10, 13, 15 O-Ring
3 Set screw
4 Seat
6 Shaft sleeve
8 Cover
9 Seal face
11 Spring
12 Seat
14 Drive collar
16 Set screw
17 Retaining ring
18 Assembly fixture
19 Hex socket head screw
20 Gasket
(5)Recommended seal supply
EagleBurgman TS2000 Thermosiphon system
(6)Recommended applications
•Refining technology
•Petrochemical industry
•Hot media
•Cold media
•Highly viscous media
•Pumps
•Special rotating equipment
(7) Materials
Seal face: Carbon graphite (A), Silicon carbide (Q1)
Seat: Silicon carbide (Q1), Tungsten carbide (U2)
Secondary seals: FPM (V), EPDM (E), FFKM (K)
Bellows: Inconel® 718 (Mfb)
Springs: Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G), Duplex (G1)
(8)Product variant
Mtex9-DN
Dimensions, items and descriptions as for Mtex-DN,
but with optimized seal face geometry for pressurized
operation according to API Plan 53/54. A barrier fluid
system (e. g. EagleBurgman TS2000) is necessary.
Pressure: p1 = 10 bar (145 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)
Barrier fluid circulation system:
p3max = 1fb bar (232 PSI)
Δp (p3 - p1) ideal = 2 ... 3 bar (29 ... 44 PSI)
Δp (p3 - p1) max = 16 bar (232 PSI)
API Plan 53/54
Pump startup:
Δp (p3 - p1) max = 16 bar (232 PSI) allowed
| d1 | d2 | d3min. | d3max. | L4 | L5 | L6 | L7 | da | a2 | s |
| 25 | 45.0 | 47.0 | 51.0 | 25.4 | 87.0 | 33.6 | 53.4 | 105.0 | 62.0 | 13.2 |
| 30 | 49.4 | 52.0 | 56.0 | 25.4 | 86.5 | 33.1 | 53.4 | 105.0 | 67.0 | 13.2 |
| 32 | 52.3 | 54.5 | 57.0 | 25.4 | 86.5 | 33.1 | 53.4 | 108.0 | 70.0 | 13.2 |
| 33 | 52.3 | 54.5 | 57.0 | 25.4 | 86.5 | 33.1 | 53.4 | 108.0 | 70.0 | 13.2 |
| 35 | 54.8 | 58.0 | 61.5 | 25.4 | 86.5 | 33.1 | 53.4 | 113.0 | 72.0 | 13.2 |
| 38 | 57.5 | 60.0 | 66.0 | 25.4 | 86.5 | 33.1 | 53.4 | 123.0 | 75.0 | 14.0 |
| 40 | 58.8 | 62.0 | 68.0 | 25.4 | 86.3 | 32.9 | 53.4 | 123.0 | 77.0 | 14.2 |
| 43 | 61.9 | 64.5 | 70.5 | 25.4 | 86.5 | 33.1 | 53.4 | 133.0 | 80.0 | 14.2 |
| 45 | 65.0 | 68.5 | 73.0 | 25.4 | 86.5 | 33.1 | 53.4 | 138.0 | 82.0 | 14.2 |
| 48 | 68.4 | 71.0 | 75.0 | 25.4 | 86.8 | 33.4 | 53.4 | 138.0 | 85.0 | 14.2 |
| 50 | 70.0 | 73.0 | 78.0 | 25.4 | 87.2 | 33.8 | 53.4 | 148.0 | 87.0 | 14.2 |
| 53 | 71.9 | 75.0 | 87.0 | 25.4 | 87.4 | 34.0 | 53.4 | 148.0 | 97.0 | 18.0 |
| 55 | 74.6 | 77.0 | 83.0 | 25.4 | 87.0 | 33.6 | 53.4 | 148.0 | 92.0 | 18.0 |
| 60 | 83.9 | 87.0 | 91.0 | 25.4 | 88.2 | 34.8 | 53.4 | 157.0 | 102.0 | 18.0 |
| 65 | 87.5 | 90.0 | 98.5 | 25.4 | 88.1 | 34.7 | 53.4 | 163.0 | 109.3 | 18.0 |
| 70 | 93.0 | 98.0 | 108.0 | 25.4 | 89.6 | 36.2 | 53.4 | 178.0 | 118.3 | 18.0 |
| 75 | 96.8 | 101.6 | 118.0 | 28.0 | 107.4 | 43.5 | 63.9 | 190.0 | 129.0 | 18.0 |
| 80 | 104.7 | 108.0 | 124.0 | 28.0 | 106.8 | 42.9 | 63.9 | 195.0 | 135.0 | 18.0 |
We have large stock, so our delivery is very fast.
For example,if products are standarded, the delivery time is one week.
Our company and factory addrss: Ningbo City, Zhejiang Province,China.
Our city has a large port and an airport, so its transportation is very convenient.
Question1: What are the prices of your products?
Answer: For each model, the unit price is listed on the website, but what is displayed on the website is only the average market price. For specific models, you can contact us for further consultation and negotiation.
Question 2: Are you a factory or a trade company?
Answer: We are a factory with top sales for the trade service.
Question 3: What is the minimum order quantity for each order?
Answer: For products of regular models, the minimum order quantity is at least five. We welcome you to test the quality of our products and services through placing trial orders. Looking forward to the long-term cooperation with you.
Question4: What is your company's service tenet?
Answer: Quality first, service upmost. We promises that if there is any problem with the quality of the product, or if the product is damaged during the transportation, our company will be responsible for compensation, regardless of the ordder turnover value.
Question5: Can I try to get a SAMPLE before the order?
Answer: Sure. Our company will provide you with samples for free, but you will have to pay for the international delivery (freight collect payment).
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