$20.00
1 Piece (MOQ)
Elastomer Bellows Seal John Crane Type 502
ZHANGJIAGANG SAISI MECHANICAL SEAL CO., LTD.
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Pool Pump Seal John Crane Type 21 Mechanical Seal
| Price | $40.00 |
|---|---|
| Min Order | 1 Piece |
| Availability | In Stock |
| Shipping From | Jiangsu, China |
| Popularity | 328 people viewed |
Model NO.:
SRS-E21
Structure:
Single End
Pressure:
≤1.0MPa
Speed:
≤15m/S
Temperature:
-20ºC~120ºC
Performance:
Temperature
Standard:
Standard
Type:
SRS-01
Balance:
Balanced
Replace:
Johncrane 21
Rotary Face:
Carbon/Sic/Tc
Stat Ring:
Carbon/Sic/Tc
Seat Type:
Standard SRS-S11, Alternative SRS-S20/S21
Trademark:
SRS
Transport Package:
SRS Standard or Customised
Origin:
China
HS Code:
8484200090
Product Description
Suggested operating limits
Temperature: -20 - 120ºC
Speed: ≤15m/s
Pressure: ≤1.0Mpa
Combined material
Rotary face: Carbon/Sic/TC
Stat Ring: Ceramic/Sic/TC
Seat Type: Standard SRS-S11, Alternative SRS-S20/S21.
Features
The drive band's "dent and groove" design eliminates overstressing of the elastomer bellows to prevent bellows slip and protect the shaft and sleeve from wear.
Non-clogging, single-coil spring provides greater dependability than multiple spring designs and will not foul due to fluid contact.
Flexible elastomer bellows automatically compensates for abnormal shaft-end play, run-out, primary ring wear and equipment tolerances.
The Type 21 is ideal for use in centrifugal, rotary and turbine pumps, compressors, chillers and other rotary shaft equipment. It is also commonly used by the waste water and water systems industries for applications such as waste treatment, potable water and HVAC.
Also we could manufacture seals according to your drawing, and design as your request.
| SIZE/INCH | d | D3 | D31 | D6 | D7 | L3 | L4 |
| 0.500 | 12.7 | 24.0 | 22.8 | 19.05 | 25.40 | 20.62 | 7.95 |
| 0.625 | 15.8 | 26.7 | 26.7 | 23.80 | 31.75 | 22.23 | 10.31 |
| 0.750 | 19.0 | 31.2 | 30.4 | 26.97 | 34.93 | 22.23 | 10.31 |
| 0.875 | 22.2 | 33.6 | 33.4 | 30.15 | 38.10 | 23.80 | 10.31 |
| 1.000 | 25.4 | 43.2 | 39.3 | 33.32 | 41.28 | 25.40 | 11.10 |
| 1.125 | 28.5 | 46.5 | 42.0 | 36.50 | 44.45 | 26.97 | 11.10 |
| 1.250 | 31.7 | 49.5 | 45.8 | 39.70 | 47.63 | 26.97 | 11.10 |
| 1.375 | 34.9 | 52.7 | 49.3 | 42.85 | 50.80 | 28.58 | 11.10 |
| 1.500 | 38.1 | 56.0 | 52.8 | 46.05 | 53.98 | 28.58 | 11.10 |
| 1.625 | 41.2 | 62.2 | 55.5 | 50.80 | 60.33 | 34.93 | 12.70 |
| 1.750 | 44.4 | 66.0 | 61.0 | 53.97 | 63.50 | 34.93 | 12.70 |
| 1.875 | 47.6 | 66.0 | 64.0 | 57.15 | 66.68 | 38.10 | 12.70 |
| 2.000 | 50.8 | 73.0 | 66.0 | 60.33 | 69.85 | 38.10 | 12.70 |
| 2.125 | 53.9 | 73.5 | 71.5 | 60.33 | 76.20 | 42.85 | 14.27 |
| 2.250 | 57.1 | 79.6 | 79.6 | 61.90 | 79.38 | 42.85 | 14.27 |
| 2.375 | 60.3 | 82.0 | 79.6 | 65.10 | 82.55 | 46.05 | 14.27 |
| 2.500 | 63.5 | 85.0 | 81.5 | 68.25 | 85.73 | 46.05 | 14.27 |
| 2.625 | 66.6 | 88.5 | 84.6 | 71.42 | 85.73 | 49.20 | 15.88 |
| 2.750 | 69.8 | 92.7 | 90.0 | 74.60 | 88.90 | 49.20 | 15.88 |
| 3.000 | 76.2 | 102.0 | 96.8 | 80.95 | 98.43 | 52.37 | 15.88 |
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