Reverse balance multi spring seal – 87U is available in various technical specifications. These are with externally mounted reverse balance design seal which having 'O' ring as a secondary sealing member in which the secondary sealing member can be changed as per the chemical compatibility.

These are designed with all metal components including spring are isolated from aggressive media sealing. The mechanical seal is located outside the pump which makes these easy for checkout function and cleaning possibility.

Its reverse balance design feature makes these easy to operate on low barrier fluid pressure and the single design seal is for back-to-back arrangements.

Features:
• Single Acting Mechanical Seal.
• Dual Directional Mechanical Seal.
• Outside Mounted Mechanical Seal.
• Longer service life
• Multi-Spring Design Mechanical Seal.

Materials:
• Seal Ring Faces: Carbon and SiC
• Seat Faces: Ceramic and SiC
• Elastomer: Viton, EPDM, TTV, FEP and FFKM
• MOC: SS 316, Hast -C and Alloy 20

Operating Capabilities:
• Shaft Dia.: 16mm to 70mm
• Pressure: Up to 8 bar
• Temperature: Up to 120oC
• Speed: 3000 R.P.M.

Applications
• Corrosive Chemicals
• General & Light Chemicals
• Hydrocarbons

Notes
• STANDARDS: As per Customer's Drawings and Specifications
• Viton® Registered trade marks of Dupont, USA