Standard Cartridge Seals

Pusher Mechanical Seal

LP95VK

The Pusher Mechanical Seal is designed for reliable sealing in pumps and rotating equipment operating under varied pressure and temperature conditions. Its spring-loaded pusher design allows axial movement to compensate for wear, ensuring consistent sealing performance and adaptability across multiple industrial applications. Since 2002, Lineproof Engineering, based in Mumbai, has been producing high-quality mechanical shaft seals and engineered sealing solutions that support efficient equipment operation and long-term reliability across process industries.

Pusher Mechanical Seal for Standard Cartridge Seals

Face Material

Silicon Carbide, Carbon Graphite.

Metal Parts

SS 316, SS 304.

Secondary Seal

EPDM, NBR, FKM, FFKM.

Operating Limits

Shaft Diameter 20 mm to 110 mm
Pressure 40 bar
Temperature −40 °C to 220 °C
Velocity 23 m/s

Characteristics

Dual seal
Cartridge unit
Design acc. to API 682/ISO 21049
Category 2 and 3, Type A, Arrangement 2 or 3
Bi-directional design available
Rotating multiple springs
Integrated pumping device
Suitable for pressure reversals

Application

Oil and gas industry
Refining technology
Petrochemical industry
Power plant technology
Volatile and viscous hydrocarbons
Process pump systems

Pusher Mechanical Seal Technical Drawing

No.	Component	No.	Component
1	Seal Face	15	Set Screw
2	Seal Face	16	Set Screw
3	Drive Collar	17	Seat
4	Drive Collar	18	Seat
5	Thrust Ring	19	Shaft Sleeve
6	Thrust Ring	20	Key
7	O-Ring	21	Retainer
8	O-Ring	22	Washer
9	O-Ring	23	Pin
10	O-Ring	24	Housing
11	Sleeve	25	HSH Cap Screw
12	Sleeve	26	Assembly Fixture
13	Spring	27	Hexagon Bolt
14	Spring	28	Set Ring