Trisun Mechanical Seal John Crane Type 1

• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Speed: General Speed Mechanical Seal
• Temperature: Low-Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Model NO.: TST1 TYPE1
• Type: John Crane
• Balance: Unbalanced
• Material: Tc/Tc/Viton/304
• Certificate: FDA, Wras, API
• Mcm Pump Seal and Shaft Sleeve: Mcm 250 Mechanical Seal
• Type 1 Seal: Nov #22451-1
• Harrisburg Mud Pump Seal: Type 1-1 1/8 Pump Seal
• Forum Centrifugal Pump Sea: Type 1-3.5" Shaft Seal
• Nov Halco 2500 Supreme Mud Pumps Seals: Diamond Coating Seal
• Curflo Pump Seal: Mud Centrifugal Pump Seal
• Mcm 250 Pump Seal: Type 1 Mechanical Sea
• Mission Pump Seal: Type 1 Pump Seal
• Transport Package: Carton
• Specification: 42*32.5*32
• Trademark: Trisun
• Origin: Wenzhou, Zhengjiang
• HS Code: 84842000
• Production Capacity: 50000sets/Year

Product Description

Mud centrifugal pump parts and ANSI pump parts, replacecing John crane type1.
working together with the shaft sleeve,which we also can make.

We also have other pump parts for MCM pumps

Mechanical seals with diamond coating on sealing faces to extend lifetime. 



Type 1 seal and shaft sleeve are used for mud centrifugal pumps and ANSI pumps such as mcm®, mission® magnum, halco®, mattco, harrisburg®, national oilwell, mission®2500 supreme, spd mud hog®, derrick® premium 2500. Curflo®,  Forum® and other major brand pumps.

most common 2500 series pump will be equipped with this seal and shaft sleeve. 

Type 1-3.5" has diamond coating and has longer life time. 


Dimensions: 2.5 inch, 1.875 inch and 1.5 inch
Material: Tungsten Carbide  VS  Tungsten Carbide, Viton, SS316 machining parts

Type 1 seals, same as NOV #22451-1, fit the following pumps too:
MISSION MAGNUM 1 and XL MUD PUMPS
NOV HALCO 2500 SUPREME MUD PUMPS
SPD 2.5″ MUD HOG CENTRIFUGAL PUMPS

Its sleeves are made of stainless steel and has two choices:
stainless steel and stainless steel with ceramic coating.
The sleeves with ceramic coating have longer service time and very good quality.

In harsh conditions, these pumps use cartridge seals and we also produce cartridge seals.