| Structure: | Single End |
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| Pressure: | High Pressure Mechanical Seals |
| Speed: | Ultra-High-Speed Mechanical Seal |
| Samples: |
Customer′s requirement
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier (1)Features
• Single seal
• Balanced
• Independent of direction of rotation
• Stationary springs
• Dual seals in tandem as well as back-to-back arrangements (also in combination with H10 seal)
(2)Advantages
• Spring unit averted from the product so no sticking and clogging of the springs
• Safe operation (no fractures) because of seal face locking by square pin
• Suitable for pressure reversals
• Operation in vacuum without additional seat locking possible
• No damage of the shaft by a dynamically loaded O-Ring
• Small installation sizes
• Best suitable for conversions, no adaptations of the pump
• Insensitive to solid containing and abrasive media
• Advantages of a balanced seal even with plain shafts
• Insensitive to shaft movements because of the stationary design
(3)Operating range (see note on page 1)
Shaft diameter: d = 18 ... 100 mm (0.71" ... 3.94")
Pressure: p1* = 25 bar (363 PSI)
Temperature: t = -40 °C ... +220 °C (-40 °F ... +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement: ±1.0 mm
* Additional seat locking is not needed in vacuum operation.
For operation under vacuum it is necessary to arrange for quenching on the atmosphere side.
(4)Materials
Seal face: Carbon graphite resin impregnated (B),
Silicon carbide (Q1)
Seat: Silicon carbide (Q1)
Secondary seals: FKM (V), NBR (P), FFKM (K), PTFE (T)
Springs: Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G)
(5)Standards and approvals
• EN 12756
(6)Recommended applications
• Water and waste water technology
• Chemical industry
• Refining technology
• Dirty, abrasive and solid containing media
• Fugitive hydrocarbons (no API seal!)
• Sticky and stringy media
• Chemical standard pumps
• Sewage pumps
(7)Item Part DIN 24250 Description
1.1 472 Seal face
1.2 412.1 O-Ring
1.3 485 Retainer
1.4 477 Spring
1.5 412.2 O-Ring
2 475 Seat
3 412.3 O-Ring
4 485 Drive collar
5 412.4 O-Ring
6 904 Set screw
Dimensions in mm
| d1 | d3 | d6 | d7 | d8 | d10 | L1k | L3 | L5 | L6 | f | mx |
| 18 | 33.0 | 27.0 | 33.0 | 3.0 | 34.7 | 37.5 | 19.5 | 2.0 | 5.0 | 3.0 | 4.0 |
| 20 | 35.0 | 29.0 | 35.0 | 3.0 | 36.7 | 37.5 | 19.5 | 2.0 | 5.0 | 3.0 | 4.0 |
| 22 | 37.0 | 31.0 | 37.0 | 3.0 | 38.7 | 37.5 | 19.5 | 2.0 | 5.0 | 3.0 | 4.0 |
| 24 | 39.0 | 33.0 | 39.0 | 3.0 | 40.7 | 40.0 | 20.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 25 | 40.0 | 34.0 | 40.0 | 3.0 | 41.7 | 40.0 | 20.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 28 | 43.0 | 37.0 | 43.0 | 3.0 | 44.7 | 42.5 | 21.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 30 | 45.0 | 39.0 | 45.0 | 3.0 | 46.7 | 42.5 | 21.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 32 | 48.0 | 42.0 | 48.0 | 3.0 | 49.7 | 42.5 | 21.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 33 | 48.0 | 42.0 | 48.0 | 3.0 | 49.7 | 42.5 | 21.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 35 | 50.0 | 44.0 | 50.0 | 3.0 | 51.7 | 42.5 | 21.5 | 2.0 | 5.0 | 3.5 | 5.0 |
| 38 | 56.0 | 49.0 | 56.0 | 4.0 | 57.7 | 45.0 | 24.0 | 2.0 | 6.0 | 4.0 | 6.0 |
| 40 | 58.0 | 51.0 | 58.0 | 4.0 | 59.7 | 45.0 | 24.0 | 2.0 | 6.0 | 4.0 | 6.0 |
| 43 | 61.0 | 54.0 | 61.0 | 4.0 | 62.7 | 45.0 | 24.0 | 2.0 | 6.0 | 4.0 | 6.0 |
| 45 | 63.0 | 56.0 | 63.0 | 4.0 | 64.7 | 45.0 | 24.0 | 2.0 | 6.0 | 4.0 | 6.0 |
| 48 | 66.0 | 59.0 | 66.0 | 4.0 | 67.7 | 45.0 | 24.0 | 2.0 | 6.0 | 4.0 | 6.0 |
| 50 | 70.0 | 62.0 | 70.0 | 4.0 | 71.7 | 47.5 | 25.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 53 | 73.0 | 65.0 | 73.0 | 4.0 | 74.7 | 47.5 | 25.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 55 | 75.0 | 67.0 | 75.0 | 4.0 | 76.7 | 47.5 | 25.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 58 | 78.0 | 70.0 | 78.0 | 4.0 | 80.5 | 52.5 | 28.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 60 | 80.0 | 72.0 | 80.0 | 4.0 | 82.5 | 52.5 | 28.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 63 | 83.0 | 75.0 | 83.0 | 4.0 | 85.5 | 52.5 | 28.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 65 | 85.0 | 77.0 | 85.0 | 4.0 | 87.5 | 52.5 | 28.0 | 2.5 | 6.0 | 4.0 | 6.0 |
| 68 | 90.0 | 81.0 | 90.0 | 4.0 | 92.5 | 52.5 | 28.0 | 2.5 | 7.0 | 4.0 | 6.0 |
| 70 | 92.0 | 83.0 | 92.0 | 4.0 | 94.5 | 60.0 | 34.0 | 2.5 | 7.0 | 6.0 | 8.0 |
| 75 | 97.0 | 88.0 | 97.0 | 4.0 | 100.5 | 60.0 | 34.0 | 2.5 | 7.0 | 6.0 | 8.0 |
| 80 | 105.0 | 95.0 | 105.0 | 4.0 | 108.5 | 60.0 | 34.0 | 3.0 | 7.0 | 6.0 | 8.0 |
| 85 | 110.0 | 100.0 | 110.0 | 4.0 | 113.5 | 60.0 | 34.0 | 3.0 | 7.0 | 6.0 | 8.0 |
| 90 | 115.0 | 105.0 | 115.0 | 4.0 | 118.5 | 65.0 | 39.0 | 3.0 | 7.0 | 10.0 | 8.0 |
| 95 | 120.0 | 110.0 | 120.0 | 4.0 | 123.5 | 65.0 | 39.0 | 3.0 | 7.0 | 10.0 | 8.0 |
| 100 | 125.0 | 115.0 | 125.0 | 4.0 | 128.5 | 65.0 | 39.0 | 3.0 | 7.0 | 10.0 | 8.0 |
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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Audited Supplier 
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