United Seals Technology Chennai, Tamil Nadu

We offers a wide range of stack-able packing designs. Commonly called VEE Packing. The sets are made of top and bottom adapters with pressure VEE rings in the middle, each set consisting of a number of VEE rings and the pressure rating of these sets is driven by the total configuration of materials. These are very popular in sealing rods and pistons. They can be used for low or high pressure applications and with single or double acting cylinders.

Rod or Gland seals prevent fluid leakage from the past the rod and into the atmosphere. Rod Seals are one of the most critical devices in a hydraulic system and are necessary to ensure pressure is maintained in hydraulic circuit, maximum force can be held on the rod and that fluid is not escaping the system. In Heavy-Duty applications, a Rod Seal will be paired with a Buffer Seal. A buffer seal is housed in the gland, between the Rod Seal and the Piston and is used to prevent damage to the primary Rod Seal during instances of extreme pressure and pressure spikes.

The Rotary Shaft Seal is  used for excluding dirt, dust, water or other particles, while retaining lubricant in rotary shaft equipment. It was developed as a means of protecting bearings of rotating shafts. The area between the sealing edge and the shaft is most important. The sealing effect is achieved by preloading the sealing lip making its internal diameter slightly smaller than the shaft diameter.  The garter spring ensures constant force to the shaft, flattening the sealing edge to a defined width. Oil seals prevent internal system fluids from leaking and keep external contamination from entering the system. Leakage and/ or contaminants paths occur between the shaft and the seal lip and between the seal and the housing. Oil seals need to seal both dynamically (on the shaft) and statically (on the outer diameter of the seal).

Pneumatic seals are often very similar in design to Hydraulic Seals. The sealing principles remain the same and both cylinder types operate under the same physical principles. The key difference between both applications is that Pneumatically operated cylinders are actuated using compressed air. Generally the air in the pneumatic system has been degreased, filtered and de-watered to remove contaminants which may cause corrosion to the cylinder as well as premature wear to the seals. Pneumatic Cylinders are preferred in applications where high-speed actuation of the cylinder rod is needed as well as in environments where extreme heat, open flames, and flammable gases may make the use of a hydraulic system with a mineral based fluid intolerable.

Rod or Gland seals prevent fluid leakage from the past the rod and into the atmosphere. Rod Seals are one of the most critical devices in a hydraulic system and are necessary to ensure pressure is maintained in hydraulic circuit, maximum force can be held on the rod and that fluid is not escaping the system. In Heavy-Duty applications, a Rod Seal will be paired with a Buffer Seal. A buffer seal is housed in the gland, between the Rod Seal and the Piston and is used to prevent damage to the primary Rod Seal during instances of extreme pressure and pressure spikes.   Modern Rod Seals are designed with a Secondary sealing lip on the inner dimension in addition to the Primary sealing lip. The purpose of the secondary lip is to trap a small pool of hydraulic fluid between the Primary and Secondary lip to help reduce friction on the rod and lubricate the Wiper's sealing lip on the extending stroke, thereby reducing wear on the seal. It also has the benefit of keeping the chromed rod lubricated and shielded from external contaminants which can cause corrosion when exposed to the atmosphere for extended periods of time. On the rod's return stroke, the secondary sealing slip aids in lubricating the Rod Seals primary sealing lip which can often come in contact with an excessively wiped rod due to the effect of the wiper seal removing all rod contaminants and preventing the ingress of foreign media.

We offer a wide range of Guide stripes and to fit any application. Available in NYLON, PTFE and composite materials. Standard as well as tight tolerance wear rings are available in a variety of heights, thicknesses and cut (bulk strip, cut-to-length and machined rings are also available in a variety of heights and thicknesses.) The wear strip can be cut to any length and used as a wear ring for a hydraulic or pneumatic piston. Available in low friction Bronze filled PTFE strip or Polyester Resin /Nylon material.