Installation Procedure
Note: This procedure is only for Duo-Cone conventional seals. This procedure does not pertain to Duo-Cone floating seals.
It is extremely important to follow the correct procedure for installing Duo-Cone seals. Many seal failures are the direct result of mistakes during installation of the seal components.
- Remove any oily film, dust or other foreign matter from all of the seal components. Use isopropyl alcohol and a clean cloth to wipe the components. (Paper towels may also be used.)
Note: Do not allow oil to contact rubber toric rings (1) or seal ring ramps (7) before both seal rings (2) are assembled in Step 10.
 | |
| Illustration 1 | g00296728 |
(1) Rubber toric ring. (2) Seal ring. (3) Housing retaining lip. (4) Housing ramp. (5) Seal ring housing. | |
 | |
| Illustration 2 | g00296926 |
(6) Seal ring face. (7) Seal ring ramp. (8) Installation tool. (9) Seal ring retaining lip. | |
 |
Use caution when you are using isopropyl alcohol. Avoid prolonged skin contact with isopropyl alcohol. Vapors may be harmful if inhaled. Use only in a well ventilated area. Do not smoke while using isopropyl alcohol. Isopropyl alcohol is flammable. Do not use near an open flame or near welding operations. Keep isopropyl alcohol away from heated surfaces exceeding 482°C (900°F). |
 |
- Put rubber toric ring (1) on seal ring (2). Make sure that the toric ring is at the bottom of seal ring ramp (7) and against seal ring retaining lip (9) .
Note: Make sure that rubber toric ring (1) is straight on seal ring (2). There must not be a twist in the toric ring. Be careful when you are working on the rubber toric ring. Nicks, cuts and scratches can cause leaks.
 | |
| Illustration 3 | g00296933 |
 | |
| Illustration 4 | g00296971 |
- Put installation tool (8) on seal ring (2) with rubber toric ring (1). Lower the rings into a container of isopropyl alcohol until all surfaces of rubber toric ring (1) are wet.
Note: Do not use Stanisol or any other liquid that may leave an oily film.
 | |
| Illustration 5 | g00296975 |
- While all surfaces of rubber toric ring (1) are still wet, use installation tool (8) to position seal ring (2) and the toric ring squarely against seal ring housing (5), as shown.
 | |
| Illustration 6 | g00297112 |
- Measure dimension (A) from seal ring face (6) to the top surface of seal ring housing (5). Check dimension (A) in at least four places (90 degree intervals). The measurements must not differ by more than 1 mm (0.04 inch).
 | |
| Illustration 7 | g00297146 |
- Rubber toric ring (1) can twist if the toric ring is not completely wet during installation. Burrs on housing retaining lip (3) or on seal ring housing (5) can also cause a twist.
If a twist occurs or if the toric ring is misaligned, repeat Steps 3 through 5.
- Before further installation, wait for at least two minutes so that the isopropyl alcohol can evaporate. This will prevent slippage on seal ring ramps (7) and on housing ramps (4). The toric ring must roll only on the seal ring ramps and on the housing ramps.
- Use a clean cloth or a paper towel to wipe off seal ring faces (6) .
Note: No particles of any kind can be left on the sealing surfaces. A small piece from a paper towel can cause a leak by keeping the sealing surfaces from contacting each other.
 | |
| Illustration 8 | g00297155 |
- Apply a thin film of clean oil on seal ring faces (6). Use an applicator, a disposable tissue or a clean finger to distribute the oil evenly. Be careful so that no oil contacts the toric rings.
 | |
| Illustration 9 | g00297156 |
- Make sure that both seal ring housings (5) are correctly aligned and concentric. Slowly move the seals toward each other.
Note: Do not slam the seals together. High impact can damage the seal components and leakage will occur.
 | |
| Illustration 10 | g00297157 |
- When the seals are in place, fasten all of the parts securely.