| Customization: | Available |
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| Structure: | Single End |
| Pressure: | High Pressure Mechanical Seals |
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(1)Features
• Multi-part seal rings, radially cut
• Chamber seal (modular design)
• Very small operation gap - low leakage
• Dry running
• Self-adjusting seal rings
• Compensation of radial and axial shaft deflections
• No sealing components mounted on the shaft and hence no additional shaft vibrations
• Seal rings running contact-free - sliding faces and machine consume no additional power
(2)Advantages
• High reliability
• Maintainability
• Segmented seal rings for easy replacement
• Maintenance-free
(3)Operating range (see note on page 1)
Shaft diameter: d = 20 ... 340 mm (0.79" ... 13.39")
Operating pressure: p = vacuum ... 1.5 bar (22 PSI) abs.
Operating temperature: t = -120 °C ... +500 °C
(-184 °F ... +932 °F) for carbon,
max. 225 °C (437 °F) for PTFE compound,
max. 300 °C (572 °F) with grease
Sliding velocity: vg = max. 150 m/s (492 ft/s) for carbon,
max. 40 m/s (131 ft/s) for PTFE compound
Radial play: ±2.0 mm (±0.08")
Axial movement: theoretically unlimited
Recommended wear guard: > 300 HB
(4)Item Description
1 Seal ring
2 Tension spring
3 Chamber
4 End ring
4.1 Welding ring (as alternative)
5 Flat seal
6 Grease chamber
6.1 Barrier gas, suction chamber
7 Intermediate chamber
(5)Materials
Seal ring: Carbon, PTFE compound
Chamber parts: 1.4571, Hastelloy®, Titanium, Inconel®, others
Tension spring: 1.4571, Hastelloy®, Titanium, Inconel®
(6)Standards and approvals
• Material approvals: FDA
(7)Recommended applications
• Chemical industry
• Metal production and processing
• Pulp and paper industry
• Food processing industry
• Power plant technology
• Machinery and plant building
• Small and medium-sized fans/blowers
• Bearing seals (gear box, motors)
• Mixers, agitators, mills, dryers
• Gases
• Fumes and exhaust, solids containing, flammable (ATEX), acid containing and toxic gases
• (Solids containing) steams/liquid mist
• Oil mist/penetrating oil
• Water
(8)Product variants
Espey WKA301/4
(up to 225 °C (437 °F)) or Espey WKA302/4
(up to 500 °C (932 °F)) for clean media, not for solids
containing gases.
Espey WKA303.2/4
(up to 225 °C (437 °F)) or Espey WKA304.2/4
(up to 500 °C (932 °F)) with barrier gas port for toxic and
solids containing media as well as ATEX applications.
Dimensions in mm
| dh7 | d1 | dB | D | D1 | LK | A | B | B1 | C | C1 | H |
| 20 | 24.0 | 10.0 | 95.0 | 110.0 | 75.0 | 12.0 | 21.0 | 38.0 | 5.0 | 21.0 | 10.0 |
| 25 | 29.0 | 10.0 | 100.0 | 115.0 | 80.0 | 12.0 | 21.0 | 38.0 | 5.0 | 21.0 | 10.0 |
| 30 | 34.0 | 10.0 | 105.0 | 120.0 | 85.0 | 12.0 | 21.0 | 38.0 | 5.0 | 21.0 | 10.0 |
| 35 | 39.0 | 10.0 | 110.0 | 125.0 | 90.0 | 12.0 | 21.0 | 38.0 | 5.0 | 21.0 | 10.0 |
| 40 | 44.0 | 10.0 | 115.0 | 130.0 | 95.0 | 12.0 | 21.0 | 38.0 | 5.0 | 21.0 | 10.0 |
| 45 | 49.0 | 12.0 | 130.0 | 145.0 | 105.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 50 | 54.0 | 12.0 | 140.0 | 155.0 | 115.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 55 | 59.0 | 12.0 | 145.0 | 160.0 | 120.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 60 | 64.0 | 12.0 | 150.0 | 165.0 | 125.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 65 | 69.0 | 12.0 | 155.0 | 170.0 | 130.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 70 | 74.0 | 12.0 | 160.0 | 175.0 | 135.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 75 | 79.0 | 12.0 | 165.0 | 180.0 | 140.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 80 | 84.0 | 12.0 | 170.0 | 185.0 | 145.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 85 | 89.0 | 12.0 | 175.0 | 190.0 | 150.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 90 | 94.0 | 12.0 | 180.0 | 195.0 | 155.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 95 | 99.0 | 12.0 | 185.0 | 200.0 | 160.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 100 | 104.0 | 12.0 | 190.0 | 205.0 | 165.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 105 | 109.0 | 12.0 | 195.0 | 210.0 | 170.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 110 | 114.0 | 12.0 | 200.0 | 215.0 | 175.0 | 12.0 | 21.0 | 38.0 | 5.0 | 30.0 | 10.0 |
| 120 | 124.0 | 14.0 | 220.0 | 235.0 | 190.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 130 | 134.0 | 14.0 | 230.0 | 245.0 | 200.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 140 | 144.0 | 14.0 | 240.0 | 255.0 | 210.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 150 | 154.0 | 14.0 | 250.0 | 265.0 | 220.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 160 | 164.0 | 14.0 | 260.0 | 275.0 | 230.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 170 | 174.0 | 14.0 | 270.0 | 285.0 | 240.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 180 | 184.0 | 14.0 | 280.0 | 295.0 | 250.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 190 | 194.0 | 14.0 | 290.0 | 305.0 | 260.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 200 | 204.0 | 14.0 | 300.0 | 315.0 | 270.0 | 14.0 | 23.0 | 40.0 | 7.0 | 30.0 | 12.0 |
| 210 | 214.0 | 14.0 | 310.0 | 325.0 | 280.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 220 | 224.0 | 14.0 | 320.0 | 335.0 | 290.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 230 | 234.0 | 14.0 | 330.0 | 345.0 | 300.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 240 | 244.0 | 14.0 | 340.0 | 355.0 | 310.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 250 | 254.0 | 14.0 | 350.0 | 365.0 | 320.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 260 | 264.0 | 14.0 | 360.0 | 375.0 | 330.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 270 | 274.0 | 14.0 | 370.0 | 385.0 | 340.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 280 | 284.0 | 14.0 | 380.0 | 395.0 | 350.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 290 | 294.0 | 14.0 | 390.0 | 405.0 | 360.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| 300 | 304.0 | 14.0 | 400.0 | 415.0 | 370.0 | 16.0 | 23.0 | 40.0 | 10.0 | 30.0 | 14.0 |
| Special sizes on request. | |||||||||||
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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