| Customization: | Available |
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| Structure: | Single End |
| Pressure: | High Pressure Mechanical Seals |
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(1)Features
• For top entry drives, type M481 to DIN
• Single or double seals
• Unbalanced
• Independent of direction of rotation
• Multiple springs rotating
• Liquid-lubricated
• Cartridge unit
(2)Advantages
• Ready-to-fit and factory-tested units
• Available with or without floating bearing
• Suitable for standardizations
• FDA certification
• Double seals can be applied at higher pressure and rotating speed than specified by DIN
• Due to the hydraulic conditions, product pressure as well overlaying barrier pressure closes the seal.
(3)Operating range (see note on page 1)
DIN 28138 T2
Shaft diameter: d3 = 40 ... 220 mm (1,57" .... 8,66")
Single seals:
Pressure: p1 = vacuum ... 6 bar (87 PSI),
p3 = pressureless
Temperature: t1* = -40 °C ... +150 (250) °C (-40 °F ... +302 (482) °F)
Double seals:
Pressure: p1 = vacuum ... 16 bar (232 PSI),
p3 = max. 18 bar (261 PSI)
Temperature: t1* = -40 °C ... +200 (350) °C (-40 °F ... +392 (662) °F)
Sliding velocity: vg = 0 ... 5 m/s (0 ... 16 ft/s)
For applications beyond this range, please inquire.
* Higher or lower temperatures on request.
(4)Materials
According to application and customer's specification
(5)Item Description
1 Seal face, atmosphere side
2 Seal face, product side
6 O-Ring
7 O-Ring
11 Seat, product side
12 Seat, atmosphere side
13 O-Ring
14 O-Ring
15 O-Ring
34 Shaft seal
(6)Standards and approvals
• Material approvals: FDA
• DIN 28136 (for steel vessels)
• DIN 28141 (flange connection)
• DIN 28154 (shaft end)
(7)Recommended seal supply
Closed circuit EagleBurgman TS system, open circuit
EagleBurgman SPA, EagleBurgman SPN
(8)Recommended applications
• Chemical industry
• Pharmaceutical industry
• Non-toxic media with single seal
• Toxic media with double seal
• Agitators
• Reactors
Designation and position acc. to DIN 28138 T3.
A Barrier fluid resp. quench IN
B Barrier fluid resp. quench OUT
C Drainage
D Leakage drain G1/8"
E Cooling IN G3/8"
F Cooling OUT G3/8"
G Grease
S Flush
T Temperature metering
For reasons of standardization, the supply connections of
single seals are matched to those of the double seals (in
deviation from DIN 28138T3).
(9)Notes
Options:
• Cooling or heating flange
• Leakage drain, flush or heating flange
• Leakage drain or flush
• Polymerization barrier, leakage drain or flush
See page 259.
(10)Product variants
M481K
Single seal
M481KL
Single seal with integrated floating bearing.
Operation of single seals only with pressureless quench.
M481K-D
Double seal
M481KL-D
Double seal with integrated floating bearing.
These seals are designed to be self-closing on the product
side, i.e. they will remain closed even with pressure
variations or a pressure reversal. Operation is optionally
the same as for the single version (pmax = 6 bar (87 PSI)
or Δpmax = 6 bar at p1 > p3). In view of the mechanical
seal on the atmosphere side it can be used as a buffer
pressurized double seal p1 = 16 bar (232 PSI).
M451
All types of the M481 range available for unstepped shafts
(all diameters). Seal identification: M451 ... Customized
design or e.g. different drives (torque transmissions) are available.
Clamping set Shrink disk
Dimensions in mm
| d31) | d71) | d1 | n x d2 | d4 | d0 | K | L1 | L2 | Lw2) | I1 | I2 | a | M1 | M2 | A, B |
| 40 | 38.0 | 175.0 | 4 x 18 | 110.0 | 90.0 | 145.0 | 87.0 | 136.0 | 143.0 | 15.0 | 28.0 | 122.0 | M12 | M16 | G3/8 |
| 50 | 48.0 | 240.0 | 8 x 18 | 1776.0 | 135.0 | 210.0 | 89.0 | 149.0 | 148.0 | 17.0 | 28.0 | 157.0 | M12 | M16 | G3/8 |
| 60 | 58.0 | 240.0 | 8 x 18 | 176.0 | 135.0 | 210.0 | 93.5 | 156.0 | 158.0 | 17.0 | 28.0 | 168.0 | M12 | M16 | G3/8 |
| 80 | 78.0 | 275.0 | 8 x 22 | 204.0 | 155.0 | 240.0 | 104.5 | 189.0 | 168.0 | 20.0 | 34.0 | 203.0 | M12 | M20 | G1/2 |
| 100 | 98.0 | 305.0 | 8 x 22 | 234.0 | 190.0 | 270.0 | 109.0 | 190.0 | 178.0 | 20.0 | 34.0 | 228.0 | M16 | M20 | G1/2 |
| 125 | 120.0 | 330.0 | 8 x 22 | 260.0 | 215.0 | 295.0 | 110.0 | 205.0 | 203.0 | 20.0 | 40.0 | 268.0 | M16 | M20 | G1/2 |
| 140 | 135.0 | 395.0 | 12 x 22 | 313.0 | 250.0 | 350.0 | 124.0 | 222.0 | 208.0 | 20.0 | 40.0 | 285.0 | M20 | M20 | G1/2 |
| 160 | 150.0 | 395.0 | 12 x 22 | 313.0 | 265.0 | 350.0 | 127.5 | 219.5 | 213.0 | 25.0 | 40.0 | 297.0 | M20 | M20 | G1/2 |
| 180 | 170.0 | 445.0 | 12 x 22 | 364.0 | 310.0 | 400.0 | 132.5 | 230.0 | 233.0 | 25.0 | 45.0 | 332.0 | M24 | M20 | G1/2 |
| 200 | 190.0 | 445.0 | 12 x 22 | 364.0 | 310.0 | 400.0 | 137.5 | 237.5 | 243.0 | 25.0 | 45.0 | 352.0 | M24 | M20 | G1/2 |
| 220 | 210.0 | 505.0 | 16 x 22 | 422.0 | 340.0 | 460.0 | 149.5 | 249.5 | 263.0 | 25.0 | 50.0 | 381.0 | M24 | M20 | G1/2 |
| 1) Shaft diameters d3 and d7 to DIN 281542) Shaft step to DIN 28154 | |||||||||||||||
| 2) Shaft step to DIN 28154 | |||||||||||||||
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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