| Customization: | Available |
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| Structure: | Single End |
| Pressure: | High Pressure Mechanical Seals |
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(1) Features
•Single seal
•Cartridge
•Balanced
•Independent of direction of rotation
•Metal bellows
•Single seal with quench and lip seal (-QN) throttle ring (-TN)
•Version available with multipoint injection ring (-QNM, -TNM)
•Supply connections for flush (A) and quench (B)
(2)Advantages
•Ideal seal for standardizations
•Universal applicable for packings conversions, retrofitsor 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 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 topreassembled 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: p = 25 bar (363 PSI)
* Operating limits of O-Rings to be observed
(4) Materials
Seal face: Carbon graphite antimony impregnated (A),
Silicon carbide (Q1)
Seat: Silicon carbide (Q1)
Secondary seals: FKM (V), EPDM (E), FFKM (K)
Bellows: Inconel® 718 (M6)
Metal parts: CrNiMo steel (G), Duplex (G1)
Throttle ring: PTFE carbon graphite reinforced (T12)
Lip seal: NBR (P), PTFE carbon reinforced (T3)
(5) Item Description
1 Bellows unit
2, 5, 7 O-Ring
3, 11 Set screw
4 Seat
6 Shaft sleeve
8 Cover
9 Lip seal or throttle ring
10 Drive collar
12 Retaining ring
13 Assembly fixture
14 Hex socket head screw
15 Gasket
16 Screw plug
(6)Recommended applications
•Refining technology
•Petrochemical industry
•Hot media
•Cold media
•Highly viscous media
•Pumps
•Special rotating equipment
(7)Product variants
Mtex-QNM
Single seal, as Mtex-QN
with additional multipoint injection ring (item B)
Mtex-TNM
Single seal, as Mtex-TN
with additional multipoint injection ring (item B)
Dimensions in mm
| d1 | d2 | d3min. | d3max. | L1 | L2 | L3 | L4 | da | a1 | s |
| 25 | 45.0 | 47.0 | 51.0 | 79.5 | 26.1 | 53.4 | 25.4 | 105.0 | 62.0 | 13.2 |
| 30 | 49.4 | 52.0 | 56.0 | 78.4 | 25.0 | 53.4 | 25.4 | 105.0 | 67.0 | 13.2 |
| 32 | 52.3 | 54.5 | 57.0 | 78.4 | 25.0 | 53.4 | 25.4 | 108.0 | 70.0 | 13.2 |
| 33 | 52.3 | 54.5 | 57.0 | 78.4 | 25.0 | 53.4 | 25.4 | 108.0 | 70.0 | 13.2 |
| 35 | 54.8 | 58.0 | 61.5 | 78.4 | 25.0 | 53.4 | 25.4 | 113.0 | 72.0 | 13.2 |
| 38 | 57.5 | 60.0 | 66.0 | 78.4 | 25.0 | 53.4 | 25.4 | 123.0 | 75.0 | 13.2 |
| 40 | 58.8 | 62.0 | 68.0 | 78.2 | 24.8 | 53.4 | 25.4 | 123.0 | 77.0 | 14.2 |
| 43 | 61.9 | 64.5 | 70.5 | 78.4 | 25.0 | 53.4 | 25.4 | 133.0 | 80.0 | 14.2 |
| 45 | 65.0 | 68.5 | 73.0 | 78.4 | 25.0 | 53.4 | 25.4 | 138.0 | 82.0 | 14.2 |
| 48 | 68.4 | 71.0 | 75.0 | 78.7 | 25.3 | 53.4 | 25.4 | 138.0 | 85.0 | 14.2 |
| 50 | 70.0 | 73.0 | 78.0 | 79.1 | 25.7 | 53.4 | 25.4 | 148.0 | 87.0 | 14.2 |
| 53 | 71.9 | 75.0 | 87.0 | 77.8 | 24.4 | 53.4 | 25.4 | 148.0 | 97.0 | 18.0 |
| 55 | 74.6 | 77.0 | 83.0 | 78.9 | 25.5 | 53.4 | 25.4 | 148.0 | 92.0 | 18.0 |
| 60 | 83.9 | 87.0 | 91.0 | 80.1 | 26.7 | 53.4 | 25.4 | 157.0 | 102.0 | 18.0 |
| 65 | 87.5 | 90.0 | 98.5 | 80.0 | 26.6 | 53.4 | 25.4 | 163.0 | 109.3 | 18.0 |
| 70 | 93.0 | 98.0 | 108.0 | 81.5 | 28.1 | 53.4 | 25.4 | 178.0 | 118.3 | 18.0 |
| 75 | 96.8 | 101.6 | 118.0 | 94.4 | 30.5 | 63.9 | 28.0 | 190.0 | 129.0 | 18.0 |
| 80 | 104.7 | 108.0 | 124.0 | 94.4 | 30.4 | 64.0 | 28.0 | 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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