Mechanical Seal Stationary Ring(ceramic/SIC/TC Rotary Ring(Carbon/SIC/TC) Secondary Seal(NBR/EPDM/Viton/silica Gel) Sp Mechanical Seal pumps:Auto- pump sealsbr,Auto cooling pump seals,Water pump seals,Classic mechanical seals5.Chemical pump seals,SEWAGE PUMPS ,etc.Mediums:water oil and weak acids ,weak alkali ,etc. temperature: - 30-200 degrees pessure: ≤1MPaSpeed:≤10m/Sec