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SS-Type 21: John crane Type 21, AES P04/P04T mechanical seal

Description:
SS-Type 21: Replacement of John crane Type 21, AES P04/P04T, Flowserve 110, Roten 21A, Sterling 212A, Vulcan 11 elastomer bellows seal

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SS-Type 21
Structure Description:
Rubber bellows design
Equivalent to John crane type 21/AES P04/AES P04T
Operating Limits:
Temperature:-40°F to 400°F/-40°C to 205°C (depending on materials used)
Speed: 13m/s
Pressure: 11bar
Standard size: 0.275-1''
Materials:
Seal ring: Car,Sic,Ssic,Ceramic,TC
Secondary seal: NBR,EPDM,Viton etc.
Spring and metal parts:304,316,HAST.C

SS-Type 21 Dimensions(inches)
Size D1 D3 D4 L3
0.250 0.250 0.718 0.843 0.625
0.375 0.375 0.812 0.937 0.812
0.500 0.500 0.937 1.187 0.812
0.625 0.625 1.062 1.187 0.875
0.750 0.750 1.187 1.312 0.875
0.875 0.875 1.312 1.437 0.937
1.000 1.000 1.687 1.937 1.000
1.125 1.125 1.812 2.062 1.062
1.250 1.250 1.937 2.187 1.062
1.375 1.375 2.062 2.312 1.125
1.500 1.500 2.187 2.437 1.125
1.625 1.625 2.500 2.750 1.375
1.750 1.750 2.625 2.875 1.375
1.875 1.875 2.750 3.000 1.500
2.000 2.000 2.875 3.187 1.500
2.125 2.125 3.000 3.312 1.687
2.250 2.250 3.125 3.437 1.687
2.375 2.375 3.250 3.562 1.812
2.500 2.500 3.343 3.687 1.812
2.625 2.625 3.500 4.000 1.937
2.750 2.750 3.750 4.125 1.937
2.875 2.875 3.875 4.375 2.062
3.000 3.000 4.000 4.500 2.062
3.125 3.125 4.125 4.750 2.187
3.250 3.250 4.250 4.875 2.187
3.375 3.375 4.500 5.250 2.187
3.500 3.500 4.625 5.375 2.187
3.625 3.625 4.750 5.500 2.312
3.750 3.750 4.875 5.625 2.312
3.875 3.875 5.000 5.750 2.437
4.000 4.000 5.125 5.875 2.437

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