Mechanical Pump Shaft Seal
Spring, Number 80509









Material | |
Case | 304 Stainless Steel |
Spring | 304 Stainless Steel |
Diaphragm | Viton® Fluoroelastomer |
Washer | Carbon |
Seat | Ceramic |
Gasket | Viton® Fluoroelastomer |
For Shaft Diameter | 1/2" |
Manufacturer Equivalent Number | 80509 |
Manufacturer/Brand Equivalent | John Crane Type 6A |
Seal | |
ID | 0.500" |
OD | 1.125" |
Width | 0.537" |
Seat | |
ID | 0.585" |
OD | 1.000" |
Width | 0.312" |
Maximum Pressure | 75 psi |
Cannot Be Sold To | Outside North America |
Diaphragm Hardness | Durometer 70A (Hard) |
For Motion | Rotary |
For Sealing | Shafts |
For Shaft Motion | Oscillating |
For Use With | Animal Oil |
Maximum Speed | |
For Rotary Motion | 3,600 rpm |
For Oscillating Motion | 82 ft/sec |
System of Measurement | Inch |
Temperature | 0° F to 400° 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 |
Built for small circulation and dispensing pumps, these seals have short springs. The spring-loaded design keeps the sealing surfaces in contact as the material wears. 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.
Viton® Fluoroelastomer Diaphragm—Viton® fluoroelastomer diaphragms resist a wider range of chemicals than Buna-N.
Viton® Fluoroelastomer Gasket—Viton® fluoroelastomer gaskets resist a wider range of chemicals than Buna-N.
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.

























