TS10R, TS10T, TS20 and TS20R are interchangeable with John Crane type 10R, 10T, 20 and 20R. 

TS10R and TS20R have inserted rotary face (carbon, silicon carbide) and the rotary face can be changed; 
TS10T and TS20 have integral rotary face GFT and the rotary face cannot be changed. 

TSWB2 is equivalent to John Crane type WB2 teflon bellow seal. 

Type 659 is equivalent to Sealol type 659 and it is Outside Mounted Reverse Balance Teflon Bellow. 

Applications:

For water, oil, acids, alkalis, organic solvents, a small amount of suspended particles and crystallization medium, mainly used in chemical, pharmaceutical, pesticide, water treatment and other industries pump, fluorine plastic pump is the most widely used.

PTFE bellow seals are designed for extremely corrosive chemicals, including concentrated acids, salts, strong oxidising & reducing agents, and chemically active organic compounds. All components which come in contact with the liquid being sealed are made of chemically inert material. Metallic components clamping ring and springs are located outside the media. In this seal series Glass filled PTFE face is composite moulded with highly flexible PTFE bellows.


Application
Used in acids, alkalis & extremely corrosive services.

  Operating Limits
Pressure : 5 bars (Max)
Temperature : (-)20c to (+)90c
Speed : 2900 rpm (Max)
Sizes : 16 mm to 100 mm

  Material
Seal Face : Ceramic, silicon carbide, GFT
Secondary Seals : PTFE / GFT
Metal Parts : SS 316 / Hastelloy







Type 20  picture as follows: