Series 11U is a single conical helical spring unbalanced seal with 'O' ring as secondary sealing member. Various seal face materials and elastomers can be offered for wide service application. As the torque transmission is done by conical helical spring, these seals are dependent of the direction of rotation. Direction of rotation is seen from the drive end of the shaft. Clockwise rotating shaft requires right handed spring and anti-clockwise rotating shaft requires left-handed spring. For easier fitting the conical helical spring should be pushed on the shaft with a twisting motion in the sense of the spring winding. This movement enlarges the diameter of the spring, enabling easy fitment.

SERIES:- 21C and 21R
SERIES 21C and 21R are designed for extremely corrosive chemicals, including concentrated acids and salts, strong oxidising and 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 pump stuffing box.

SERIES 21C : In this seal type Glass filled PTFE face is composite moulded with highly flexible PTFE bellows.

SERIES 21R : It is a seal similar to Type 21C in design with replaceable seal ring. This permits easy removal and replacements of the seal ring, a cost saving feature. In this type different face materials can be used to handle a wide range of corrosive and abrasive liquids.

Unbalance - Wedge / 'O' Ring Type
SERIES:- 30U and 35U
Series 30U and 35U are multiple spring-unbalance seal with Wedge as secondary sealing member in series 30U and 'O' Ring as a sealing member in 35U. Various face material & elastomers can be offer for wide service application. The compact design of seal permits their use in all types of centrifugal pump. As all parts are interchangeable, one can convert series 30U to series 35U by changing only seal ring, secondary packing and mating ring packing. This concept is ideal for stock rationalization.

These Seals can be easily assemble or dismantled through circlip provided & can be change to Balance version by merely changing the carbon face only & can be provided with single, double or tandem arrangement with external seal support systems & devices

Balance – Wedge / 'O' Ring Type
SERIES:- 40B and 45B
Series 40B & 45B are multiple spring balance seal with O-Ring as secondary sealing member in series 40B & wedge as a sealing member in 45B. Various face material & elastomers can be offer for wide service application. The compact design of seal permits their use in all types of centrifugal pump. As all parts are interchangeable, one can convert series 40B to series 45B by changing only seal ring, secondary packing and mating ring packing. This concept is ideal for stock rationalization

SERIES:- 50
Series 50 is multiple spring externally mounted balanced seal with 'O' ring as secondary sealing member. The unique feature of this type of seal is that, it eliminates the shaft step or sleeves for balancing. Various seal face materials and elastomers can be offered for wide service application. This seal can also be used for corrosive services as the metallic components i.e. Retainer, Spring, Thrust Ring etc do not come in contact with liquid to be sealed. The compact design eliminates the requirement of extra radial & axial space for its installation.

SERIES:- 60U and 65U
Series 60U and 65U are single coil spring unbalance seal with O-Ring as secondary sealing member in series 60U and 'V' packing as a sealing member in 65U. Various face material & elastomers can be offer for wide service application. The compact design of seal permits their use in all types of centrifugal pump. Non-clogging spring design enables these seals to be reliably used in situations involving abrasive, corrosive & viscous fluids generally handled by high Temperature pumps.

SERIES:- 70
Series 70 are Multispring High Pressure seal with O-Ring or PTFE 'V' packing as secondary sealing. They are very commonly used mechanical seals for clear liquids in most equipments. They are Bi-directional pusher type mechanical seals suitable to all type of elastomers. Such mechanical seals are available in Un-balance design for low pressure and balance design for high pressure applications. They can be designed in double configuration for toxic and hazardous liquids.

SERIES:- 90C
Series 90C is factory assembled cartridge units for Agitators, Reactor & Glass-Lined Vessels. The seals are designed for handling severe services including products emitting toxic vapors during reaction process. The design incorporates bearing located very close to the seal. This standard feature effectively arrests the shaft whip for smooth and trouble free operation enabling enhanced seal life. The cooling jacket, also a standard feature, helps to maintain cool environment around the seal. Large clearance between rotating shaft/sleeve and mating ring permits higher deflection of the shaft, invariably associated with top entry agitators.