Combination of technical parameters of materials 
 Application: water and oil, weak acid, weak base, water and other media. 
 Applicable temperature: -30 ℃ ~ 220 ℃ 
 Suitable pressure: ≤ 1.2MPa 
 Dynamic and static ring: ceramic / silicon carbide / tungsten carbide 
 Secondary Seals: NBR / fluorine rubber / EPDM 
 Springs, stamping parts: stainless steel 
 BIA-type structure is the most common types of mechanical pump seals, are built within the flow, the transmission in the form of rubber bellows driven by tightening force rotating ring coaxial rotation, simple structure, compact. Two sets of back to back installation of the seal, can form the structure of double-end mechanical seal.