Tianjin Fuyote Technology Co.,Ltd.
Tianjin Fuyote Technology Co.,Ltd.

Square Bore/Trapezoid Type Mechanical Face Seal

Square Bore Mechanical Face Seal consists of two metallic angular seal rings with identical geometrical contours, which assembled with trapezoid elastomer parts positioned against the housing bore. Trapezoid Type Mechanical Face Seal improve the seal performance significantly under extreme mud packing conditions thanks to the elastomeric part of the seal with an integral dirt exclusion lip and heavy-duty spin protection. These feature extended service life, reduced leakage and keeps the seal fully flexible.

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Product Features
Design Features
Product Characteristic
Product Warning
Operating Requirements
Specification
  • Material: High alloy cast iron

  • Seal elastomer(s) used in standard seals: NBR, HNBR, SI

  • Seal Ring Outer Ø Range (standard parts): 59 to 800 mm

  • Seal Ring Inner Ø Range (standard parts): 42 to 750 mm

  • Seal Set Height Range (standard parts): 20 to 54 mm

To create a contact sealing face perpendicular to the axis, two metal seal rings engage with one another. One metal seal ring can rotate with the housing thanks to o-rings that transfer pressure from the housing to it, while the other one is kept in place. This places two mechanical face seals in a state of relative motion. 

An oil film is produced on the surface of the contact band by two substantially moving face seals. The sealing process relies on this oil film. When rotating, the mating faces create a contact band that is between 0.2mm (0.008") and 0.5mm (0.02") wide, which helps to keep the oil lubricant in place and resist extraneous objects. The contact band will inwardly shift while you wear it. But the o-ring releases elastic compensation, maintaining the precise position of the mechanical face seals to maintain the seal.

  • Exceptional sealing capacity against outside contaminants such abrasive media, moisture, chemicals, oil, and grease. 

  • Wear and corrosion resistant, long service life, maintenance free.

  • Self-centering to account for shaft eccentricity or misalignment. 

  • Oil lubricates and cools the seal faces, enabling faster spinning speeds.


The Fuyote design, in which just one metallic seal rotates, produces a leak-proof seal, requires no maintenance, offers an exceptionally long service life, and accounts for vibrations, misalignment, eccentricity, assembly wear, and other circumstances. The advantages of the FUYOTE product are displayed below. 

  • Black seal faces prevent rusting and improve o-ring grip, which prevents o-ring sliding. Fuyote provides anti-skid stripes to customers who need white seal faces in order to get the same result. 

  • Cross-hatched grooves on the seal contact bands guarantee adequate oil flow and heat control, allowing the seals to function under the most demanding industrial situations. The issue that a rubber oil seal cannot solve is also resolved at the same time. 

  • A specific procedure is used to create each product's end grinding surface. It prevents early sealing failure owing to angular mismatch between goods in the same batch and ensures spherical angular stability of those products. 

  • FUYOTE manufactures and designs o-rings to go with its own goods. High elasticity makes items robust by increasing wear resistance. 

  • The two meshing boundary lines coincide, which is advantageous for spherical cant design. Allow self-centering to correct any eccentricity or misalignment in the shaft.

  • When exposed to air for an extended period of time, mechanical face seals change. Before installation, only take out the seal packing. It is simple to damage mechanical face seals. Install in a clean environment and handle cautiously.

  • To ensure accurate o-ring installation, we advise the use of installation tools. Twist on o-rings could cause unequal stress and slip down from the metal ring if they are put incorrectly. ultimately result in early failure.

  • Especially the contact band, mechanical face seals are very precise products. When assembling, avoid using sharp objects, and put on gloves.  

  • Because the O-ring is temperature-sensitive, the floating seal must be stored in a dark, cool environment. Do not crush storing and lay flat.

  • O-ring twisting may result in unequal tension, creep down from the metal ring, and ultimately early failure. 

In the wrong pressure and velocity conditions, a floating seal cannot be used. In addition, care must be used when using lubricants. 

  • Optimum temperature range: -40 to 150 degrees Celsius

  • Working liner speed: capable of withstanding a circumferential speed of up to 10 m/sec.

  • Typically, floating seals are limited to 0.3 MPa of pressure.

  • It is crucial to lubricate the seal at the sealing gaps; oil lubrication is preferred over grease lubrication.

  • The oil level must be between the axis' midpoint and the seal's inner diameter, or about two-thirds of its diameter. It is advised to use SAE 80 and SAE 90 gearbox oils. 

Square Bore/Trapezoid Type Mechanical Face Seal


Drawing No.Seal SetShaft (Max) dHousing Bore
PN#A=DIDHBore depth deRecommended  shoulder dia dtBore depth T1T2C
CS0420DF
59.042.020.039.065.053.010.010.523.0
CS0470DF
62.047.020.044.070.058.011.511.523.0
CS0450DF
65.045.022.042.070.158.011.512.124.7
CS0505DF
65.050.519.046.576.263.010.511.023.0
CS0540DF
73.054.022.050.080.067.011.512.026.0
CS0585DF
73.058.519.054.082.665.010.011.023.0
CS0586DF
80.058.619.654.084.071.09.09.521.0
CS0600DF
80.060.024.056.085.070.010.510.528.0
CS0635DF
81.063.519.059.587.871.09.09.521.0
CS0670DF
86.267.020.064.095.582.010.011.023.0
CS0671DF
91.767.020.064.095.582.010.011.023.0
CS0740DF
92.873.820.070.0102.288.010.011.023.0
CS0741DF
99.074.020.070.0102.288.010.011.023.0
CS0760DF
90.076.017.073.095.083.08.09.518.0
CS0770DF
97.077.025.074.0105.087.012.513.529.0
CS0820DF
101.582.020.078.0110.296.010.011.023.0
CS0825DF
100.082.522.078.0114.397.011.012.025.5
CS0875DF
111.587.519.085.0115.8102.010.011.023.0
CS0880DF
104.088.019.085.5113.098.08.09.520.0
CS0920DF
113.092.024.088.0125.8109.012.513.028.0
CS0940DF
115.094.024.090.0125.8109.012.513.028.0
CS0941DF
120.094.024.090.0125.8109.012.513.028.0
CS0990DF
123.099.019.095.0127.3113.010.011.023.0
CS0991DF
120.099.017.595.0124.0110.08.59.520.0
CS1040DF
132.0104.027.0100.0141.2121.015.016.032.2
CS1050DF
124.0105.024.0100.0135.0114.012.013.028.0
CS1140DF
133.2114.026.0110.0148.0130.012.013.028.0
CS1141DF
138.0114.026.0110.0148.0126.012.013.028.0
CS1150DF
141.0115.028.0112.0152.4131.415.315.333.6
CS1240DF
144.0124.032.0120.0162.5142.018.320.039.6
CS1330DF
156.0133.028.0128.0171.5151.015.315.332.6
CS1340DF
155.6134.022.0130.0162.6152.010.713.122.8
CS1425DF
161.0142.524.0138.0173.0139.711.111.127.7
CS1430DF
165.0143.028.0139.0177.5168.015.816.833.6
CS1431DF
166.0143.028.0139.7174.0158.815.515.533.0
CS1480DF
172.0148.029.0144.0184.5164.716.516.535.0
CS1485DF
167.9148.528.0143.0184.1164.016.518.035.0
CS1481DF
168.0148.532.4143.0188.9172.016.516.536.0
CS1500DF
175.0150.030.0145.0190.0170.016.518.035.0
CS1501DF
177.0150.032.0145.0184.1164.016.518.035.0
CS1520DF
178.0152.032.0149.0192.0172.014.016.531.0
CS1540DF
180.0154.036.0149.0194.0174.018.418.438.5
CS1541DF
180.4154.030.0149.0190.0170.016.018.035.0
CS1580DF
180.0158.018.0153.0190.0174.08.010.022.0
CS1600DF
180.0160.036.0155.0194.0174.018.418.438.5
CS1630DF
184.0163.030.0158.0190.5175.015.015.031.8
CS1690DF
195.0169.033.0164.0206.2191.515.118.432.2
CS1740DF
194.0174.023.0170.0204.7190.510.713.122.8
CS1780DF
207.0178.029.0174.0218.9197.016.516.535.0
CS1920DF
218.0192.032.0187.0231.0206.015.217.032.4
CS1930DF
214.3193.032.0188.0238.7215.020.120.142.2
CS1931DF
223.0193.032.0188.0238.7215.020.120.142.2
CS1980DF
224.0198.035.0195.0245.0223.017.017.040.0
CS1981DF
220.0198.018.0195.0228.6212.010.512.023.0
CS2030DF
229.5203.038.0198.0254.0235.021.223.044.5
CS2060DF
237.5206.038.0202.0254.0235.021.223.044.5
CS2135DF
238.0213.528.0209.0254.0240.013.715.232.0
CS2140DF
242.0215.038.0210.0255.5235.018.921.239.6
CS2150DF
249.0215.038.0210.0255.5235.018.9021.2039.6
CS2220DF
244.6222.022.0217.0254.0240.010.510.523.0
CS2250DF
246.0225.040.0221.0277.1247.023.723.749.0
CS2251DF
246.0225.036.0221.0266.8247.018.218.238.1
CS2260DF
256.0226.040.0220.0277.1247.023.723.749.0
CS2280DF
260.5228.040.0221.0277.1247.523.723.749.0
CS2330DF
259.0233.035.0225.0280.0250.017.018.040.0
CS2360DF
265.0236.030.0231.0273.1230.015.617.034.2
CS2380DF
261.9238.022.0233.0269.9255.010.710.722.9
CS2390DF
264.0239.036.0234.0279.4261.917.520.036.5
CS2410DF
261.3241.022.0236.0269.9255.010.610.622.2
CS2415DF
273.5241.536.0236.0279.4260.617.520.036.5
CS2416DF
273.5241.636.0236.0295.3273.021.321.344.6
CS2470DF
270.5247.041.0243.0301.2272.023.523.549.5
CS2485DF
269.1248.528.0243.0279.4260.012.712.728.9
CS2520DF
282.0252.038.0248.0295.2272.020.723.044.5
CS2580DF
286.0258.028.0253.0292.1276.015.617.033.2
CS2750DF
303.0275.036.0270.0309.4290.017.520.037.0
CS2830DF
305.0283.042.0278.0329.4307.018.522.139.2
CS2831DF
319.0283.034.0278.0329.4307.018.518.539.2
CS2835DF
322.5283.542.0278.0329.4307.018.522.139.2
CS3020DF
326.0302.028.0295.0336.6317.015.617.033.2
CS3200DF
352.5320.040.0312.0365.1343.020.021.042.0
CS3550DF
392.0355.040.0347.0401.7380.023.023.047.6
CS3790DF
414.0379.040.0371.0424.1403.023.023.047.6
CS4290DF
458.0429.042.0421.0477.0447.018.422.038.9
CS4420DF
478.0442.042.0434.0488.7467.418.422.038.9
CS4421DF
470.0442.042.0434.0488.7467.418.4022.0038.9
CS4800DF
515.0480.044.0475.0530.0502.022.024.848.0
CS4920DF
530.0492.042.0485.0546.0532.019.922.041.7
CS5000DF
534.0500.042.0490.0546.0532.019.922.041.7
CS5350DF
580.0535.045.0525.0600.0581.024.528.353.0
CS5400DF
570.0540.042.0530.0582.8552.721.421.446.6
CS5700DF
600.0570.045.056061558523.527.351
CS5780DF
616.0578.040.056862460021.521.545
CS6180DF
670.0618.050.0608682.5649263054
CS6200DF
664.0620.050.0610682.5649263054
CS6600DF
692.0660.046.065070568224.526.552
CS7490DF
782.0749.047.0737812.877926.13054
CS7500DF
800.0750.054.0737812.877926.127.158




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