Mechanical Pump Shaft Seal with Extended Spring
Narrow-Profile, Buna-N Gasket, Number 205





Material | |
Case | 316 Stainless Steel |
Spring | 316 Stainless Steel |
Diaphragm | Buna-N |
Washer | Carbon |
Seat | Ceramic |
Gasket | Buna-N |
For Shaft Diameter | 1 3/4" |
Manufacturer Equivalent Number | 205 |
Manufacturer/Brand Equivalent | John Crane Type 1 |
Seal | |
ID | 1.750" |
OD | 2.300" |
Width | 2.000" |
Seat | |
ID | 1.796" |
OD | 2.500" |
Width | 0.500" |
Maximum Pressure | 150 psi |
Cannot Be Sold To | Outside North America |
Diaphragm Hardness | Durometer 65A (Medium Hard) |
For Motion | Rotary |
For Sealing | Shafts |
For Shaft Motion | Oscillating |
For Use With | Ammonia |
Maximum Speed | |
For Rotary Motion | 3,600 rpm |
For Oscillating Motion | 82 ft/sec |
System of Measurement | Inch |
Temperature | -40° F to 212° F |
Country of Origin | Mexico |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 848420.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
With a smaller seal OD than standard seals, these seals have an extended spring that accommodates variations in seal cavity length. They're used in waste water, boiler feed, and compressor pumps. Seals come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. Seal Width represents the working height, which is the compressed length when installed. The seat is comprised of the seat and the gasket.
Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
Cannot Be Sold Outside North America—Products cannot be sold outside North America due to restrictions.
The information in this 3-D model is provided for reference only.

























