Mechanical Seal John Crane Type 20R/20

• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Temperature
• Standard: Standard, Nonstandard
• Model NO.: SS-20/SS-20R
• Type: SS-20/SS-20R
• Balance: Balanced
• Transport Package: Wooden Box or Carton Box Upon The Order
• Specification: CE; RoHS
• Trademark: Saisi Seal
• Origin: Zhangjiagang, Jiangsu
• HS Code: 8484200090
• Production Capacity: 60000

Product Description

Product Description

Equivalent to John Crane Type 20/Type 20R

SS-Type 20 and SS-Type 20R Shaft Seals feature chemically inert materials in all areas and on all surfaces in contact with the liquid being sealed; 

Metallic components, springs and clamp ring, are located outside the pump seal chamber, isolated from the process liquid;

Multiple springs are standard,A single spring design is available;

For use with extremely corrosive chemicals, including concentrated acids and salts, strong oxidizing and reducing agents, and chemically active organic compounds commonly used on PTFE filled pumps.

 

Operating Limits

Temperatures:-45C to 121C/-50F to 250F

Pressures: 10 bar g/150 psig

Speeds:

20: To 5 mps/1000 fpm

20R: To 13 mps/2600 fpm

 

Materials:

Seal ring:Carbon (Type 20R),Resin Filled PTFE (Type 20),Silicon Carbide

Secondary Seal:PTFE

Metal parts: 316