Water Pump, Mechanical Seal, Seal-Type21

• Customization: Available
• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Model NO.: Type-21
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Balance: Unbalanced
• Delivery: on Stock
• Water Pump Seal: John Crane Type 21
• Seal Type: T21
• Type 21 Mechanical Seal: John Crane Seal
• Transport Package: Customized Package
• Specification: standard
• Trademark: QT
• Origin: China
• HS Code: 84842000
• Production Capacity: 10000

Product Description

T21 is Alternative to:
John Crane type 21
US SEAL type C
AES P04,
Flowserve 110,
Roten 21A,
Sealol 43 CU Short seal,
Sterling 212A,
Vulcan 11         

The seat could be CUP seat or O-ring groove seat. 

Operational Condtions:

Temperature	-20°C to+120°C
Pressure	≤1.0MPa
Speed	≤15m/s

 
Materials: 

Stationary Ring	Ceramic(Alumna) Silicon Carbide,Sintered Pressureless Silicon Carbide ,Reaction bonded  Co-binder tungsten Carbide
Rotary Ring	Resin lmpregnate Carton Graohite Antimony lmpreg Carbon Graphite Silicon Carbide,Sintered Pressureless Silicon Carbide ,Reaction bonded
Secondary Seal	NBR EPDM Viton
Spring and Metal Parts	Stainless steel 304 Stainless steel 316

 
Seat Type:

Standard	T11
Alternative	CT20,T21

 
Applicatins: 

Clean water,sewage water,oil and other moderately corrosive fluids.